Conduct research to identify two naturally occurring radioactive elements and two synthetic radioactive elements.

Answers

Answer 1

Natural radioactive elements are those that spontaneously radiate in nature and have an atomic number between 82 and 92. In dirt, air, water, rocks, plants, food, uranium—a radioactive element—can be discovered.

What makes certain substances radioactive?

When an element's atoms contain excess neutrons or protons, the extra energy produced in the nucleus causes the atom to lose its equilibrium or become unstable. if and how radioactive particles can become stable. Radiation is produced by radioactive atoms' unstable nuclei.

What radiation is the most dangerous?

Compared to beta and gamma particles, alpha particles represent the most dangerous internal threat. The most hazardous methods of exposure to radioactive elements that release alpha and beta radiation are ingestion, inhalation, absorption, and injection. Gamma radiation is the outside hazard that causes the most damage.

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Related Questions

Give two ways a globe is like the earth and two ways a globe is not like the earth.
Its a homework question and I'm to lazy to think HELP PLEASE

Answers

Answer:

A glove is like the earth because...

A globe is like the earth in that it is a three-dimensional representation of the earth's features, such as countries, oceans, and landmasses.

A globe is also like the earth in that it can rotate on its axis, which allows the viewer to see different parts of the earth depending on the angle of rotation.

A globe is not like the earth because...

A globe is not like the earth in that it is typically much smaller than the earth.

A globe is also not like the earth in that it does not depict the earth's relief features, such as mountains and valleys, in their true proportion to the rest of the earth's surface.

Final answer:

A globe is like the earth in that it is a scaled-down, spherical model of the earth's surface, representing physical features accurately. However, a globe is not like the earth because it is much smaller and does not rotate or revolve.

Explanation:

The globe and the earth are similar in two main ways. First, a globe is a scaled-down model of the earth, showing an accurate representation of the earth's surface. This includes physical features such as continents, oceans, and countries, which are mapped out precisely. Second, a globe is spherical, just like the earth.

However, there are differences between a globe and the earth. One key difference is the scale: the earth is far larger than any globe. The most obvious point of difference is the size: while a globe is small enough to be held in your hands or placed on a desk, the earth has a diameter of approximately 7,917.5 miles. Also, the globe is a static object, it does not rotate on its axis or revolve around the sun like the earth does.

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which nucleus experiences a stronger net force holding its protons and neutrons togeter unanium or or barium

Answers

Answer:

Uranium experiences a stronger net force holding its protons and neutrons together than barium.

Explanation:

You are marooned on a sandy island surrounded by ocean water. A stagnant, murky, looking pond contains the only available water on the island. In your survival kit, you have the following items:

-One nylon jacket
-One plastic cup
-Two plastic bags
-One length of rubber tubing
-One knife
-One 1-L bottle of liquid bleach
-One 5-L glass bottle
-One bag of salted peanuts

Describe a plan to produce drinkable water using only the items available and the sun. Use pictures as necessary.

Answers

Answer:

Step 1: Use the kn*fe to cut the rubber tubing into two pieces.

Step 2: Use one plastic bag to filter the pond's murky water. Place the bag over the plastic cup and pour the water into it.

Step 3: Place the filtered water from the plastic bag into the 5-L glass bottle.

Step 4: Add a few drops of the liquid bleach to the water in the glass bottle.

Step 5: Place the nylon jacket over the top of the glass bottle and secure it with the rubber tubing.

Step 6: Place the glass bottle in direct sunlight and let it sit for at least an hour.

Step 7: Remove the nylon jacket and rubber tubing from the glass bottle.

Step 8: Use the second plastic bag to filter the water from the glass bottle.

Step 9: Enjoy the drinkable water!

Explanation:

CHEMISTRY - DOES ANYONE KNOW HOW TO DO THIS QUESTION???

Answers

Cathode: 2 Ag+ (aq) + 2 e- → 2 Ag (s). Anode: 2 H+ (aq) → H2 (g) + 2 e-.

What is cathode ?

A cathode is an electrode in an electrical circuit from which electrons flow out. It is usually made of metal and is negatively charged. Cathodes are commonly used in electronic devices such as batteries, lamps, and vacuum tubes. In a battery,

the cathode is the terminal which provides a negative charge and is usually connected to the negative terminal of the battery. In a vacuum tube, the cathode is the source of electrons which flow through the tube to the anode, which is the positive terminal.

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1. what are the methods of vegetative propagation
2.give examples of organisms exihibiting each type
3.tubers-definitio example potatoes

science subject

Answers

Natural vegetative propagation uses bulbils, aerial shoots, roots, underground stems, and subaerial stems. Utilizing unique vegetative components, artificial vegetative propagation is accomplished.

What is vegetative propagation, and how does it work?

The production and growth of a new plant through asexual means or from a plant fragment is known as vegetative propagation. There is no gamete production or fertilization throughout the process of propagation.

What are some instances of vegetative tuber propagation?

In this procedure, tubers—modified roots—grow into new plants. In some plant species, adventitious buds even grow on the roots. If the correct circumstances are present, these buds develop into new plants or sprouts. Sweet potato and dahlia are two examples.

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list five examples of acidic oxides​

Answers

8 acidic oxides, take your pick <3

Aluminium oxide.

Silicon dioxide.

Phosphorus oxides.

Sulfur oxides.

Chlorine oxides.

Iron oxides.

Chromium oxides.

Vanadium oxides

aluminium oxide, silicon dioxide, phosphorus oxides, sulfur oxides, chlorine oxides.

Which statement about the elements in Group 0 is correct?
Tick () one box.
A. All elements in the group are very reactive.
B. All elements in the group form negative ions.
C. The boiling points increase down the group.
D. The relative atomic masses (Ar) decrease down the group.

Answers

The boiling points increase down the group.Thus, option C is the answer.

Group 0, also known as the noble gases, is a group of chemical elements in the periodic table. These elements are all characterized by having a full valence shell of electrons, which gives them little tendency to gain or lose electrons and makes them generally unreactive. As a result, the elements in Group 0 are not very reactive and do not form many compounds.

The boiling points of the elements in Group 0 generally increase as you go down the group. This trend is due to the increasing atomic radius of the elements as you go down the group. The larger the atomic radius, the more space there is between the atoms in a substance, and the more energy is required to overcome the attractive forces between the atoms. This results in a higher boiling point.

In contrast, the relative atomic masses (Ar) of the elements in Group 0 generally decrease as you go down the group. This is because the atomic radius increases as you go down the group, but the number of protons in the nucleus (and therefore the atomic mass) does not change significantly. As a result, the relative atomic mass decreases as the atomic radius increases.

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The information provided below was obtained from the label of the commercial stock
bottle of concentrated tetraoxosulphate (VI) acid. Calculate the volume of the acid that
is needed to prepare 8dm3
of 0.5moldm-3
solution of the compound from the stock.
Specific gravity of H2SO4 = 1.84gcm-3
% purity of acid =97%
Molar mass = 98gmol-1

Answers

The volume of acid required to prepare 8dm3 of 0.5moldm-3 solution of the compound is 203 cm3.

What is volume?

Volume is the amount of space that an object or substance occupies. It is typically measured in cubic units, such as metres cubed (m³). Volume is an important concept in mathematics, physics, and engineering. Volume plays an important role in everyday life; for example, the volume of water in a swimming pool can be measured to determine how much water needs to be added or subtracted. Volume is also used to measure the amount of a substance, such as oil or gas. The volume of a container can also be used to measure the amount of material contained within it. Volume can also be used to measure the capacity of a container, such as a bucket or a tank. In addition, volume can be used to calculate the mass of an object by measuring its density.

The mass of acid required to prepare 8dm3 of 0.5moldm-3 solution of the compound is:
M = 8 x 0.5 x 98 = 392 g
The volume of acid required to prepare 8dm3 of 0.5moldm-3 solution of the compound is:
V = 392 / (1.84 x 0.97) = 203 cm3
Therefore, the volume of acid required to prepare 8dm3 of 0.5moldm-3 solution of the compound is 203 cm3.

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A chemist has one solution that is 30.% acid and another solution that is 18% acid. How much of each solution should be used to get 300. L of a solution that is 21% acid?

a. 23 L of the 30.% solution and 277 L of the 18% solution
b. 75 L of the 30.% solution and 225 L of the 18% solution
c. 131 L of the 30.% solution and 169 L of the 18% solution
d. 138 L of the 30.% solution and 162 L of the 18% solution
e. 244 L of the 30.% solution and 56 L of the 18% solution

Answers

There is a golden rule of solubility, non polar solute dissolve in non polar solvent and polar solute dissolve in polar solvent. Therefore, the correct option is option B.

What is solution?

Solution is a homogeneous mixture of two or more than two substances. A solution is a homogeneous mixture of solute and solvent molecules. Solvent is a substance that is in large amount in solution. solute is the substance which is in small amount in a solution.

There are two types of mixture that is homogeneous and heterogeneous. Solution is a homogeneous solution. The nature of solvent tells about whether the solvent is in liquid, solid or gas form.

Let amount of 30% to mix, be X

Then amount of 18% to mix = 300 - X

0.3X + 0.18(300 - X) = 0.21(300)

0.3X+ 0.18(300) - 0.18X= 0.21(300)

0.3X - 0.18X =0 .21(300) -0 .18(300)

0.12X =0 .03(300)

X=75L

Therefore, the correct option is option B.

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HELP PLEASEUse the molar volume of a gas at SATP to determine the
following values at SATP:
(a) the amount of nitrogen in 44.8 L of pure gas
(b) the volume (in litres) of 4.8 mol of propane gas, C3H,(g)
(c) the mass of carbon dioxide in 34.6 L of carbon dioxide
gas, CO₂(g)
(d) the volume (in mL) of 1250 g of methane, CH₂(g)
(e) the amount of oxygen in 36.5 L of 02 gas

Answers

The most common example is the molar volume of a gas at standard temperature and pressure (STP), which is equal to 22.4 L for 1 mole of any ideal gas at 273.15 K and 1 atm of pressure.

What are the applications of the Ideal Gas Law- Molar Volume?

Stoichiometry refers to the quantitative relationship between reactants and products. Calculating the quantities of reactants needed to make a given quantity of products, or the quantities of products resulting from a given quantity of reactants, is required in stoichiometric problems. Gas laws must be taken into account for the calculation if one or more reactants or products in a chemical reaction are gases. The findings of ideal gas law applications are often accurate to within 5%. We go over a few key ideas that are crucial for solving Stoichiometry Problems involving Gases in the sections below.

Stoichiometry and gas laws both rely on the mole notion as their foundation. A mole is an exact measurement of a substance. Based on the quantity of identities, a mole is a unit (i.e. atoms, molecules, ions, or particles). The number of identities in a mole of anything is equal to the number of atoms in exactly 12 grams of carbon-12, the most common isotope of carbon.

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During the electrolysis of molten sodium chloride, which ion discharges at the anode?

Answers

Answer:

it should be chlorine gas

Explanation:

PLEASE HELP! 80 POINTS
Create a VESPR drawing for
NH3
CH20
N3
SO2CI2
BrF5

Answers

The VSEPR drawing for the compounds in the question are shown in the images attached.

What is the VSEPR theory?

We have to know that according to the valence shell electron pair repulsion theory, the structure of the molecule can be found by looking at the number of electron pairs that surround the central atom in the molecule.

Now the structure of the compounds as we can see in the images that ahve been attached are based on the Vlence Shell electron pair repulsion drawing for each of the compounds that we have mentioned in the question.

We can see that the structure of the compound must have a central atom and then the other atoms in the molecule are arranged around the central atom of the molecule.

The molecule would have a definite shape that is based on the number of electron shells in the molecule.

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what mechanism of formation of magma is represented by the experiment.justify your answer




need Kona Po please ​

Answers

Explanation:

This hot material rises to an area of lower pressure through the process of convection. Areas of lower pressure always have a lower melting point than areas of high pressure. This reduction in overlying pressure, or decompression, enables the mantle rock to melt and form magma.

organic compounds on basis of carbon skeleton​

Answers

Answer:

Acyclic or Open-chain compounds. Cyclic or Closed-chain compounds.

How many moles of gas are present if P=1atm, V=1L, T=1K?
it depends on the chemical's molar mass
O.12
8.314
01

Answers

The number of moles of the ideal gas is 0.12 moles. Option A

What is the number of moles?

In the context of the problem that we have here, we are looking at the ideal  gas equation. When we look at the idea gas equation, we can tell that we would have the pressure of the gas, the volume of the gas as well as the temperature of the gas in view as is the case that we have here.

Thus, the idea that we are asked to pass across in the question is that we should be able to find out the number of moles that we have in the compound that have the variables that have been listed here.

Pressure (P) =  1 atm

Volume (V) = 1 L

Temperature (T) = 1 K

Number of moles (n) = ?

Using;

PV = nRT

n = PV/RT

n = 1 * 1/0.082 * 1

n = 0.12 moles

The moles of the gas is 0.12 moles.

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Helen knit a total of 175 centimeters of scarf over 35 nights. How many nights will Helen have to spend knitting in order to knit a total of 180 centimeters of scarf? Solve using unit rates.

Answers

Helen takes 35 nights to knit a total of 175 centimeters of scarf. Hence, she will take 36 nights to knit 180 centimeters of scarf.

What are length units?

Length is a basic measurement in for an object which is basically taken in meters or centimeters. The basic unit of length in American standard is meters (m) and in CGS system it is centimeters.

It is given that, Helen knit a total of 175 centimeters of a scarf over 35 nights. Then, the length she knit in one nigh is calculated as:

175/35 = 5 cm.

Therefore, the number of nights required to complete 180 cm is :

180 /5 = 36

Thus, she will take 36 nights to knit a total of 180 cm of scarf.

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How many moles of magnesium atoms react with 1 mole of oxygen molecules?

Answers

1 mole of magnesium atoms will react with 2 moles of oxygen molecules. This is because the chemical equation for the reaction between magnesium and oxygen is: Mg + O2 → MgO.

What is chemical equation?

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants (starting materials) on the left side and the products (resulting substances) on the right side. The symbols used to represent the reactants and products are chemical formulas, which use the symbols of the elements in the reaction. The arrow between the reactants and products indicates the type of reaction taking place. The coefficients next to the symbols and formulae of entities indicate the number of moles of each species that are involved in the reaction. The overall reaction is balanced when the number of atoms of each element on the left side of the equation is equal to the number of atoms of that element on the right side of the equation.

This equation shows that for every 1 mole of magnesium atoms, 2 moles of oxygen molecules are required for the reaction to take place. Therefore, 1 mole of magnesium atoms will react with 2 moles of oxygen molecules.

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Which type of sedimentary rock forms from weathered sediment?

Answers

Answer:

Clastic or detrital sedimentary rocks are made from pieces of bedrock, sediment, derived primarily by mechanical weathering.

Explanation:

clastic or detrital sedimentary rocks

What is the density of a 1209 kg object that is 1.94 m3 in size?

Answers

Answer:

623 kgm^-3

Explanation:

Density = Mass/Volume

Mass = 1209 kg

Volume = 1.94 m^3

Density = 1209 / 1.94 kgm^-3

             = 623.1958763 kgm^-3

             = 623 kgm^-3 (3sf)

What effect does light have on the growth of plants?

Select all that apply.
Light does not have any effect on a plant’s growth.
Light makes a plant’s stem grow shorter.
Light makes a plant’s leaves turn brown.
Light will make a plant’s leaves grow bigger.

Answers

Answer:

The answer is the last one only.

Explanation:

Light/sun gives energy and growth which makes the plants leaves/plant grow bigger.

Explanation:

Without the sun, plants wouldn't get the food that's needed to grow, reproduce and survive. plants need sunlight, water and carbon dioxide to live.

how many grams of hexane(C6H14) would be need to make 562 of carbon dioxide

Answers

The mass of hexane, C₆H₁₄ that would be needed to produce 562 grams of carbon dioxide, CO2 is 183 g

How do I determine the mass of hexane, C₆H₁₄ needed?

We'll begin by writing the balanced equation for the reaction.

2C₆H₁₄ + 19O₂ → 12CO₂ + 14H₂O

The following are obtained from the equation:Molar mass of C₆H₁₄ = 86 g/molMass of C₆H₁₄ from the balanced equation = 2 × 86 = 172 g Molar mass of CO₂ = 44 g/molMass of CO₂ from the balanced equation = 12 × 44 = 528 g

From the balanced equation above,

528 g CO₂ were produced from 172 g of C₆H₁₄

With the above information, we shall determine the mass of hexane, C₆H₁₄ needed to produce 562 g CO₂. Details below:

From the balanced equation above,

528 g CO₂ were produced from 172 g of C₆H₁₄

Therefore,

562 g of CO₂ will react to produce = (562 × 172) / 528 = 183 g of C₆H₁₄

Thus, the mass of hexane, C₆H₁₄ needed is 183 g

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For this assignment, you will make a scale model—a “core sample”—showing the layers of the Earth: crust, lithosphere, asthenosphere, mantle, outer core, and inner core.

Answers

To make a scale model of the Earth's layers, you will need the following
-A large, clear plastic container
-A ruler
-A variety of different colored modeling clay
-A sharp knife
-A marker

Instructions:
1. Measure the height of the plastic container and mark it with the marker.
2. Cut the modeling clay into thin slices with the knife.
3. Begin layering the clay slices in the container, starting with the crust at the bottom.
4. Layer the lithosphere, asthenosphere, mantle, outer core, and inner core in order.
5. Use the ruler to measure the thickness of each layer and mark it with the marker.
6. Once all the layers are in place, your scale model of the Earth's layers is complete!

Hope that helps !?
To make a scale model of the Earth's layers, you will need the following materials:

Cardboard or foam board
Scissors
Glue
Markers or paint
Ruler
First, decide on a scale for your model. For example, you could use a scale of 1 inch = 1000 miles. This means that for every 1 inch on your model, it represents 1000 miles in the actual Earth.

Next, use your ruler to measure and cut out strips of cardboard or foam board to represent the layers of the Earth. The crust is the outermost layer and is relatively thin, while the inner core is the innermost layer and is the thickest. Use your markers or paint to label each layer and add any additional details or information you would like to include on your model.

Finally, glue the layers together in the correct order, starting with the crust at the top and ending with the inner core at the bottom. Your scale model of the Earth's layers is now complete!

as a sample of water is heated, the kinetic energy of its molecules increases then, the energy is used to overcome the attractions between the molecules so that they are no longer help close together. Which sections of the heating curve illustrate this process

Answers

The sections of the heating curve illustrate this process Section A followed by B. Therefore, option D is correct.

What is the heating curve ?

The term heating curve is defined as the graphical representation of the correlation between heat input and the temperature of a substance.

At section, A solid Ice at temperature 0°C can heat  for about 10 mins and all the energy generated from heating up the ice is used to split the bonds which binds the ice together as a solid.

At Section, B the liquid water at 100°C covert to vapor because the heat energy required here split the bond between the water molecules then they are move in random directions as vapor.

Thus, option D is correct.

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Your question is incomplete, probably your question was

As a sample of water is heated, the energy is used to overcome the attractions between the molecules so that they are no longer held close together and can move in random directions. Then, the kinetic energy of its molecules increases. Which sections of the heating curve illustrate this process?

As a sample of water is heated, the energy is - 1

Image is attach below

A solution was prepared by dissolving 105.0 g of KCl in 215 g of water.


What is the molality (in m) of KCl in this solution?
(Round your answer to TWO places past the decimal)

Answers

Considering the definition of molality, the molality of the KCl in the solution is 6.56 moles/kg.

Definition of molality

Molality, or molal concentration, is the amount of a substance dissolved in a given mass of solvent. It is defined as the moles of a solute per kilogram of solvent.

The Molality of a solution is determined by the expression:

molality= number of moles of solute÷ kilograms of solvent

Molality in this case

In this case, you know:

mass of KCl= 105 gmass molar of KCl= 74.55 g/molenumber of moles of solute= mass of KCl÷ mass molar of KCl= 105 g÷ 74.55 g/mole= 1.41 molesMass of solvent = 215 g of water= 0.215 kg (being 1000 g=1 kg)  

Replacing in the definition of molality:

Molality= 1.41 moles÷ 0.215 kg

Molality= 6.56 moles/kg

The molality of the solution is 6.56 moles/kg.

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If sugar was broken back down into CO2 and H2O what kind of change would that be?

A. Chemical change
B. Radical change
or
C. Physical change

Answers

Answer: chemical change

1.5 billion plastic bottles are bought world-wide each day. These bottles are about 9.8 inches in length (1 meter = 3.28 ft). If the Earth's diameter is about 40,000 km at the equator, how many times could you encircle the Earth with the bottles laid end to end?
Hint: Your DA table should have 5 conversion factors

Answers

The number of times 1.5 billion plastic bottles laid end to end could encircle the Earth would be 9.34 times.

Dimensional analysis

Size of bottle = 9.8 inches

1 foot = 12 inches

Size of 9.8 inches bottles in foot = 0.8167 ft

Also, 3.28 ft = 1 meter

        0.8167 ft = 0.8167x1/3.28

                       = 0.2490 meter

1000 meter = 1 km

0.2490 meter = 0.2490/1000

                      = 0.000249 km

Total number of bottles = 1.5 billion

Total length of 1.5 billion bottles laid end to end  in kilometers = 1,500,000,000 x 0.000249 = 373,500 km

Number of times the bottle could encircle the earth = 373,500/40000

= 9.34 times

Thus, 1.5 billion plastic bottles would encircle the Earth about 9.34 times if laid end to end.

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Balancing chemical reactions, what is it and two examples!!

PLEASE HELP I NEED THE ANSWER!!!


Giving lots of POINTS

Answers

Answer:

A balanced chemical reaction is an equation where the number of atoms of each type in the response is the same on both reactants and product sides.

Explanation: Burning, and cooking are two examples. :)

Hope you are happy :)

Please help me fill in the blanks

Answers

Electrons first occupy the position in lowest possible energy.

orbital diagrams:-

The higher the energy level, the Third energy the electrons in that level have. On the orbital diagram, fill in the boxes to label the representations of an orbital and a sublevel.   2   electrons can occupy a single orbital, and these electrons have Opposite spin. Within a sublevel, all the orbitals fill with one electron, each of which has the Positive spin before a second electron fills any of the orbitals.

what is Orbital?

Each energy position is made up of areas known as an orbital. An orbital is an area of probability in which electrons can be set up. Each energy position, except for the first, has further than one orbital. Each orbital has a specific shape.

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What would be the electron configuration for neutral oxygen? Please show what energy level each electron is in using the electron diagonal filling rule do not use noble gas configuration.

Answers

Answer: 1s2 2s2 2p4

Explanation:

Recall the number of electrons an orbital can have:

s orbitals have 2, p orbitals have 6, d orbitals have 10, f orbitals have 14, and so on.

Oxygen in its neutral state would have 8 electrons.

To summarize the diagonal filling order, it goes from the least energy level to the most, and the orbital with the least amount of orbitals to the most.

So, the order for this will go from 1 and end at 2 (for energy level,) then s, s again (as energy level 1 has 1s orbital only,) and p.

So, the first energy level, 1s2 (2 electrons), leaves the remaining six electrons.

Completely fill the s orbital (another 2 electrons), and the remaining 4 electrons will be in the respective p orbital.

Thus, it is 1s2 2s2 2p4.

What mass of 65% and 20% nitric acid must be mixed to produce 4.5 kg of 30% nitric acid?

Answers

The mass of 65% and 20% nitric acid that must be mixed to produce 4.5 kg of 30% nitric acid are 1.306 kg and 3.189 kg respectively.

What is the volume of 4.5 kg of 30% nitric acid?

The volume of 4.5 kg of 30% nitric acid is determined using the formula below:

Volume = mass/density

The density of 30% nitric acid is 1.18 g/mL

The mass of the  30% nitric acid is 4.5 kg or 4500 g

Hence, the volume will be:

The volume of 30% nitric acid = 4500 / 1.18

The volume of 30% nitric acid = 3813.56 mL

The volume of 65% and 20% nitric acid required is then determined.

Let the volume of the 65% and 20% nitric acid be x and y respectively;

x + y = 3813.56 ---(1)

amount of acid in 3813.56 ml solution = 30% * 3813.56

amount of acid in 3813.56 ml solution = 1144.07 mL

therefore;

60% * x + 20% * y = 1144.07 mL

0.6x + 0.2y = 1144.07 ----(2)

Solving for x and y in the two equations

From (1), x = 3813.56 - y

Substitute x = 3813.56 - y in (2)

0.6(3813.56 - y) + 0.2y = 1144.07

0.4y = 1144.07

y = 2860.18 mL
x = 3813.56 - 2860.18

x = 953.38 mL

The mass of the acids required is then determined as follows:

The density of 60% nitric acid is 1.37 g/mL

Mass of 60% nitric acid required = 953.38 mL * 1.37 g/mL

Mass of 60% nitric acid required = 1306 g or 1.306 kg

The density of 20% nitric acid is 1.115 g/mL

Mass of 20% nitric acid required = 2860.18 mL * 1.115 g/mL

Mass of 20% nitric acid required = 3189 g or 3.189 kg

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Other Questions
At the Constitutional Convention (1787), the Great Compromise resolved the issue of representation by A. Creating a two-house legislature B. Limiting the terms of elected lawmakers C. Including the electoral college D. Providing for direct election of senators Given the triangle, find the perimeter.7x-43x + 7x -15x Which statement from the article best supports the idea that viewing a performance by candlelight is an unparalleled experience your uncle is 2 years older than your 3 times your age. a. you are x old. write an expression to describe your uncle's age. b. you are 12 years old. how old is your uncle Code to be written in python:Correct answer will get brainliest! :)For any positive integer S, if we sum up the squares of the digits of S, we get another integer S1. If we repeat the process, we get another integer S2. We can repeat this process as many times as we want, but it has been proven that the integers generated in this way always eventually reach one of the 10 numbers 0, 1, 4, 16, 20, 37, 42, 58, 89, or 145. Particularly, a positive integer S is said to be happy if one of the integers generated this way is 1. For example, starting with 7 gives the sequence {7, 49, 97, 130, 10, 1}, so 7 is a happy number.Your task is to write a function compute_happy_numbers(range1, range2) , where range1 and range2 are each tuples of the form (lower_bound, upper_bound), and returns a tuple containing: (1) the number of happy numbers in range1, (2) the number of happy numbers in range2, (3) the number of the range (1 or 2) containing more happy numbers, or None if both ranges have the same number of happy numbers.def compute_happy_numbers(range1, range2): """Your code here"""Test Cases: compute_happy_numbers((1,1), (1,1)) (1, 1, None) compute_happy_numbers((1, 10), (11, 100)) (3, 17, 2) You have read two passages about the discoveries made about thehuman species. Write an essay comparing the discoveries madeabout human nature from both articles. Discuss the similarities anddifferences between what each discovery shows about humannature. Incorporate material from both passages in your essay,citing sources either formally or informally. Your essay should blendwriting from at least two genres (argumentative, expository, and/ornarrative). Why do you think Natalya Stepanova asked her father to call Lomov back when she heard that he had come with a proposal? NCERT 10 The receptionist received a phone call from an individual claiming to be a partner in a high-level project and requesting sensitive information. The individual is engaging in which type of social engineering For gas piping other than black or galvanized steel installed in a concealed location, a shield plate shall be provided for protection against physical damage where a bored hole is located a maximum of ________ from the edge of the wood member. What were two of the buildings built from the MAPS projects in Oklahoma City in the 1990s?& Which of the following will cause a logical error if you are attempting to compare x to 5?Answers:a. if (x >= 5)b. if (x = 5)c. if (x == 5)d. if (x All engineering economy problems will involve which two of the following symbols Please help. 50 Points!!!Logical thinking is worse than emotional thinking because when we react from emotional thinking we make predictable choices.TrueFalse What are 3 examples of physical health? An English teacher reviewed 2 3 of an essay in 1 4 of an hour. At this rate, how many essays can she review in 1 hour? Simplify your answer and write it as a proper fraction, mixed number, or whole number. essays What were the differences between Roman and Athens? Please Help!!Chapter 101. Compare and contrast your kin-group with your interviewee's kin-group in terms of size, members, kinship terms, consanguinity, etc. Do you consider the differences to be primarily cultural or primarily individual? Explain your reasoning.2. Based on the information you received from your interviewee, your knowledge of your own kin-group, and the content of this chapter, how would you evaluate the importance of family connections in industrial and postindustrial countries?3. How has the Internet and modern communication technology affected the dynamics of your family? Provide examples to illustrate the way these technologies have affected your family relationships. Plase help me with these 10 questions Brainliest/70 points1. This plan called for representation based on a state's population. Larger states should receive more power in a national government. Evolved into the House of Representatives.1. Carolina Plan2. New Jersey Plan3. Connecticut Plan4. Virginia PlanThis document was initially used by the Continental Congress to govern. It ultimately failed, as the Federal government didn't have enough power to govern the states effectively.1. The Magna Carta2. The Declaration of Independence3. The Bill of Rights4. The Articles of ConfederationThis branch of government enforces the law. The President of the United States, the Vice President, and their cabinet.1. Judicial Branch2. Executive Branch3. Legislative Branch4. Olive BranchThis branch of government interprets or JUDGES the law. All court systems.1. Judicial Branch2. Christopher Branch4. Executive Branch5. Legislative BranchThis branch of government makes or creates the laws. This branch includes the House of Representatives and the Senate. (Congress).1. Judicial Branch2. Legislative Branch3. None of the Above4. Executive BranchThe Articles of Confederation was a failure because the national government lacked the power to...1. pass legislative with majority vote because unanimous decision was required2. All of the above3. collect federal taxes4. establish and maintain a national militaryCapital of SC moves from _________ to _________ amid complaints from the Upcountry to have a capital that was in a more central location1. Charleston to Columbia2. Columbia to Greenville3. Charleston to Greenville4. Columbia to CharlestonLarge plantations, held a majority of slaves in the state, cash crops, extreme wealth...1. Loyalists2. Colombia3. Lowcountry4. UpcountrySubsistence/small farms, higher population of whites, viewed as "uncivilized" by their counterparts.1. Charleston2. Upcountry/Upstate3. Lowcountry4. Columbia, SCPhilosopher, inventor, scientist, and founding father. Found on the $100 bill1. Thomas Jefferson2. Ben Franklin3. Alexander Hamilton4. George Washington Two speakers are driven by the same amplifier. The first speaker is placed in the origin, the second one is free to move along the x-axis (see figure). A receiver is placed on the on the y-axis, a distance L from the origin. The speakers emit sound at frequency f, the velocity of sound in the air is v. The second speaker is initially in the origin and it is the slowly moved toward the positive x-axis. Write the results in terms of L, f, and v. a) What is the wavelength of the sound waves in the air?b) Find the first position x of the second speaker at which the receiver does not get any sound (destructive interference). c) Find the first position x of the second speaker at which the receiver gets maximum intensity (constructive interference). Exclude the x=0 position What architectural feature distinguishes Romanesque pilgrimage churches?