if the temperature of a 11.5 mL sample of N2 gas is increased from 25.0° C to 75.0° C as its pressure remains constant, what will be its new volume in mL

Answer: 8.1067 kJ

Explanation: Please mark this brainliest. the joules necessary to raise the heat of a substance only depends on how much change of temp you need and how much substance is there. In this question the amount is constant. Since it is 7.6kJ to change it by 27-12=15C, and 55-39=16C. The number of kilojoules is 16/15 *7.6=8.1067

The length of segment AB is determined as 11.4 units.

The distance between two points is the length of the line segment that connects the two points in a plane.

The length of segment AB is the distance between point A and point B, which is calculated as follows;

|AB| = √[(x₂ - x₁)² + (y₂ - y₁)²]

where;

|AB| = √[(x₂ - x₁)² + (y₂ - y₁)²]

|AB| = √[(5 - - 4)² + (5 - -2)²]

|AB| = √[(9)² + (7)²]

|AB| = 11.4 units

Thus, the length of segment AB is the distance between point A and B.

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1.0x10^9 H atoms x 1 molecule NH3/3 H atoms x 1 mol NH3/9.02x10^23 molecules x 17 g/mol = 9.4x10^-18 g NH3.

The mass of the formula is obtained by summing the masses of the individual atoms in the compound's formula. Correct chemical formulas are electrically neutral no net gain or loss of electrons so ions can be considered atoms in chemical formula mass calculations. The formula mass of a molecule is the sum of the atomic weights of the atoms in the compound's molecular formula.

Ammonia is formed from three hydrogen atoms and one nitrogen atom. Therefore, three hydrogen atoms each share one electron with nitrogen to form three covalent bonds, forming one ammonia NH3 ammonia molecule. The total mass of a compound is the sum of the masses of two hydrogen atoms and one oxygen atom. Your mass is the same wherever you go in space. Weight, on the other hand, varies from place to place.

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Explanation

Given:

CH₃COOH(aq) + KOH(aq) → H2O(l)+ KC2H3O2(aq)

Volume of acetic acid = 38.9 mL = 0.0389 L

Voume of KOH = 26.7 mL = 0.0267 L

Molarity of KOH = 0.114 M

Required: The molarity of an acetic.

Solution

Step 1: Find the moles of KOH

n = C x V where n is the moles, C is the concentration and V is the volume

n = 0.114 M x 0.0267 L

n = 0.00304 mol

Step 2: Find the moles of acetic acid using stoichiometry

The molar ratio between acetic acid and KOH is 1:1

Therefore the moles of acetic acid = 0.00304 mol

Step 3: Calculate the molarity of acetic acid

C = n/V

C = 0.00304/0.0389

C = 0.0781 M

Solution

Molarity of acetic acid = 0.0781

The volume of the object is 6.6 cm³

The amount of space occupied by a three dimensional figure as measured in cubic units and when an object enters water it pushes out water to make room for itself and the object pushes out a volume of water that is equal to its own volume and this is called displacement

So here given data is  14.0 mL of water was placed into the graduated cylinder and then the water level raised to 20.6 mL so we have to find volume = ? here final volume =  20.6 mL and  initial volume =  14.0 mL

Volume = final volume - initial volume

Volume =  20.6 mL - 14.0 mL

Volume = 6.6 cm³

The volume of the object is 6.6 cm³

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Explanation:

The final products of the reaction between HCl and Ca(OH)2 can be Ca(OH)Cl, CaCl2, or both simultaneously depending on the temperature, HCl concentration and reaction time

Thermal energy transfers between the objects until an equilibrium temperature is reached.

Thermal energy transfer is the process by which heat transmitted from one body to another body, usually from a hotter body to the colder body.

Heat transfer process can occur in three different ways, and they include;

Heat transfer by conduction involves the actual movement of molecules from a hotter region to a colder region.

Heat transfer by radiation occurs through a space, from a hotter source to a colder region.

Heat transfer by convection occurs in a fluid, by the rising of hot molecules and sinking of the colder molecules.

Based on the law of conservation of energy, the heat transferred from a hotter body to a colder body will continue until both bodies reaches a state known as thermal equilibrium.

Thus, in thermal equilibrium, the final temperature of both bodies will be the same.

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ANSWER

The wavelength of the photon is 0.0053nm

STEP-BY-STEP EXPLANATION:

Given data

Frequency of the photon = 5.66 x 10^-4 Hz

Let x represents the wavelength of the photon

To determine the wavelength of the photon, we need to apply the below formula

Recall that, the speed of light is 3 x 10^8 m/s

The next process is to substitute the values into the above formula

Therefore, the wavelength of the photon is 0.0053nm

Answer:

However, ignition temperature is the lowest temperature at which a volatile material will be vaporised into a gas which ignites without the help of any ignition source. The ignition temperature is different from flash point since

The fire can be stopped by removing the supply of oxygen by blanketing the fire with foam, sand, etc. The temperature can be lowered by using water. Using the nitrogen tank to reduce the oxygen concentration can extinguish the fire.

Ignition Temperature can be described as the minimum temperature required by the substance to burn or catch fire. Burning or Combustion can be defined as a spontaneous as well as an exothermic process.

This process is exothermic in nature as heat is released during the process. We give energy to the substance just to begin the process and combustion will happen until the whole substance undergoes combustion.

Combustion is dependent on many factors such as the nature of the substance, the amount of oxygen present as combustion occurs in the presence of oxygen, the surface area of the substance, etc.

The amount of oxygen is an important factor as it enables how efficiently the combustible material undergoes combustion. Since combustion is an exothermic process, there are a variety of fuels and by burning them we generate energy.

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This perspective makes the second paragraph less interesting. This perspective makes the second paragraph less interesting. Option C.

A ballot is a device used to vote in elections and can be a piece of paper or a small ball used in secret ballots. This card is valid in full legal sense at any authority or private institution that requires presentation of a voter card. The validity of this card is temporary as it relies on the results of an automated fingerprint identification system.

The citizens over the age of 18 may not be denied or restricted by the United States or any other state based on age. Common voting methods in such institutions are vote-for-vote, ascending voting, and show of hands. Other forms of voting include recorded voting and balloting. The General Assembly may determine the voting procedure by accepting a motion.

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The molarity of the citric acid in the soft drink is 0.00385M and the w/v% for citric acid in the soft drink is 7.99 g/L

Citric acid occur naturally in lemon, limes, pineapples and citric acid used as a flavoring and preserving agent and here given experiment are given obtain 50 mL of your soft drink sample the soft drink samples in your lab have been opened several days in advance to assure it is decarbonated. add 10 mL of the soft drink into a clean 250 mL Erlenmeyer add 2 to 3 drops of phenolphthalein fill your burette with the standardized NaOH add the NaOH solution to the soft drink until the first faint lasting pink color appears repeat this part two more times and then the molarity of citric acid in soft drink are 0.00385M and we have to calculate w/v% for citric acid in the soft drink = ?

So w/v% = g of solute/ 100ml of solution = 39.99/100×20 = 7.99 g/L

Concentration of citric acid in soft drinks are 7.99g/L

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If a student determines the density of an object is 0.761g/mL, then this type of data is quantitative continuous data.

In mathematics, the expression quantitative continuous data is used to denote a type of data that can be expressed as a continuous range of variations instead of discrete variation.

Quantitative continuous data are a special class of mathematical numeration data that may include both decimals and factions and therefore represent an infinite number of possibilities in a given range for a particular parameter to be measured in normal conditions.

Therefore, with this data, we can see that quantitative continuous data are expressed by decimals and or fractions and they represent infinite values for a particular mathematical range, thereby being distinct from discrete values that are represented by different types of finite values which do not include decimals.

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Answer: The correct answer is silver.

Explanation:

Matter that has a consistent and uniform composition—the same number and kind of atoms bound in the same way—is referred to as a substance. The substances are either elements or compounds. Only silver is a substance out of the alternatives offered because it is an element and all silver materials only contain silver atoms. In the same way that gasoline is a mixture of liquids whose composition can change, air is a mixture of different gases, and steel is an alloy (a mixture of compounds and elements) whose composition can change. Therefore the silver is the correct answer.

Answer:

The surface of the Sun is covered in magnetic fields. This is the force that makes magnets stick to metal, like the door of your refrigerator. The Sun's magnetic fields affect charged particles in the corona to form beautiful features. These include streamers, loops, and plumes.

Should you use the flash above because in the above its dark at night

Flash is a popular authoring software developed by macromedia is used to create vector graphics based animation programs with full-screen navigation interfaces, graphic illustrations, and simple interactivity in an resizable file format that is small enough to stream across a normal modem connection and we should use flash because creating games, making presentations, animations, visualizations, webpage components, and many other interactive applications and at the above we should use flash because its so dark at night

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The magnitude of the net force is 20.12 N in a direction 26.56° South of East.

The net force in the given forces in the diagram s given below as follows:

Force  1, F₁ =  18 N force acting in a direction to the east

Force 2, F₂ = 9 N force acting in a direction south of the object.

The two forces form two sides of a right-angle triangle

Net force is determined using Pythagoras' rule as follows:

Net force, F = √(F₁² + F₂²)

Net force = √ (18² + 9²)

Net force = √ (324 + 81)

Net force = √ 405

Net force = 20.12 N

The direction of the Net force, θ, is determined as follows;

θ = tan⁻¹ (9 / 18)

θ = tan⁻¹ 0.5

θ = 26.56° South of East

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AgNO3(aq)+KI(aq)→AgI(s)+KNO3(aq) is  the balanced complete  ionic equation for the reaction when Kl and AgNO3 are mixed in aqueous solution.

Since KI does not combine with any of the other reagents to produce a white precipitate, 1 must be AgNO3, and 2 must be KI. 3 is presently still a mystery. Both H2SO4 and BaCl2, most likely the latter, can produce some white precipitate when combined with AgNO3, and neither reacts with KI.

An ionic equation is a chemical equation in which the electrolytes in aqueous solution are described as dissociated ions. It is similar to a molecular equation in that it represents compounds as molecules.

AgX (X = Cl, Br, or I) precipitates from the reaction of AgNO3 with halide ion solutions are employed in photographic films.

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Answer:

D. h

Explanation:

hecto (h) = 10^2

This example is similar to the previous one. Recall that oxidation reactions occur at the anode and reduction reactions occur at the cathode.

Oxidation is the process in which a compound donates electrons and as a result increases its oxidation state. When a compound receives electrons, it will be reduced and its oxidation state will decrease.

In this case, we have an element in its natural state (Zn), that is, it has a neutral charge equal to zero. After the reaction we have the same element with an oxidation state greater than and equal to +2, therefore the element was oxidized and donated two electrons corresponding to the difference in oxidation state.

Answer: Anode, oxidation

According to the quantum theory of atomic structure, an atom has all the characteristics except d) The ground state of an atom represents the absence of quantized energy.

Science that studies how matter and light behave on an atomic and subatomic scale is known as quantum mechanics.

It makes an effort to explain and describe the characteristics of molecules, atoms, and their building blocks, including electrons, protons, neutrons, and other less familiar particles like quarks and gluons.

Modern physics’ theoretical underpinning, quantum theory, describes the nature and behavior of matter and energy at the atomic and subatomic scales.

Quantum physics and alongside quantum mechanics are the terms that refer to the nature and behavior of matter and the energy present at that level.

Atoms can be stable because the attraction caused by potential and the spreading out caused by quantum mechanics balance each other out.

The orbit of an electron around an atom in classical mechanics is unstable because the energy required to maintain the orbit is released as light.

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Answer:

Gamma rays have the highest frequency.

Explanation:

science.

The color of the BTB in presence of acid is yellow, the color of BTB in presence of base is blue, the of the BTB while still in the bottle in presence of base is blue.

An inference is defined as a process of deduction that involves making educated predictions about missing bits of information based on known information.

It can also be defined as the process of drawing a reasonable judgment based on observation and prior information.

The color of BTB drop on paper is yellowish blue because of presence of acid base mixture. The color of BTB when drop of base is added to an acid is blue because of excess of base. The color of BTB when drop of acid is added to an base is yellow because of excess of acid.

Thus, the  color of the BTB in presence of acid is yellow, the color of BTB in presence of base is blue, the of the BTB while still in the bottle in presence of base is blue.

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The Ksp of Cu²⁺ is 1.8x10–7.

The solubility product regular, Ksp​, is the equilibrium steady for a strong substance dissolving in an aqueous solution. It represents the level at which a solute dissolves in solution. The greater soluble a substance is, the better the Ksp price it has.

Calculation:-

Cu(OH)₂ solid ⇔ Cu²⁺ (aq) + 2OH⁻(aq)

∴ Ksp = [Cu²⁺].[OH⁻]²-------------------------(1)

Now, 1 mole Cu(OH)₂ dissolves in water to give 1 mol Cu²⁺ and 2 moles OH⁻ ions.

So, if we consider [Cu²⁺] = x and [OH⁻] = 2x

from equation (1)

we get,

2.2×10⁻²⁰ = x.(2x)²

⇒ 2.2×10⁻²⁰ = 2x³

⇒ x = (2.2×10⁻²⁰/4)¹/³

X = 1.8 × 10⁻⁷

∴ [Cu²⁺] =  1.8 × 10⁻⁷ (M)

and  [OH⁻] = 2×  1.8 × 10⁻⁷

                  = 3.6 × 10⁻⁷ (M)

Solubility equilibrium is a form of dynamic equilibrium that exists when a chemical compound in a strong country is in chemical equilibrium with a solution of that compound. The strong can also dissolve unchanged, with dissociation, or with a chemical reaction with another constituent of the solution, inclusive of acid or alkali.

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Iron atoms can be released from iron oxides as carbon has high affinity for oxygen compared to Iron

When two atoms come in contact with each other, interaction happens between the electrons and nucleus. This might result in bond formation between them. The resultant compound will be a molecule i.e., when two atoms’ bonds together, it would result in a molecule.

Iron oxide has 2 iron atoms and 3 oxygen atoms. When heat is applied, bonds between the molecules would break and result in the formation of atom.

Carbon has higher affinity for oxygen compared to Iron. Thus, carbon would interact with formed oxygen atoms and result in carbon dioxide. The iron atoms are free now as it does not have anything to react with.

Thus, carbon with high affinity for oxygen would help to separate iron from iron oxide.

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The structure of fatty acids involves long carbon-based chains with a carboxyl group (―COOH) located in the end, triglycerides phospholipids contain a phosphate group and glycerol, while steroids are cyclic and they contain C atoms linked via 4 fused rings.

Lipids are a broad category of biomolecules that include fatty acids, triglycerides phospholipids, and steroids. For example, fatty acids are long carbonated chains that contain exactly identical CH2 groups in the interior of the molecule and a carboxyl group (―COOH) located at one extreme side.

Triglycerides phospholipids are composed of three fatty acids chains linked to a glycerol backbone and also a phosphate group that may confer polar properties to the molecule.

Finally, steroids are another important class of lipids composed of several carbon-based fused rings.

Therefore, we can conclude that fatty acids, triglycerides phospholipids, and steroids are structurally different lipids that are mainly composed of carbon-based structures.

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If a small weather balloon with a volume of 50.0 L at a pressure of 1.00 atm was developed at the edge of Typhoon odissa , the volume of the balloon when it reaches the center was 52.63 L

According to boyle's law :

P1V1 = P2V2

here:

P1 = 1 atm

V1 = 50.0 L

P2 = ( 1atm - 0.050 atm )  = 0.95 atm

V2 = ?

V2 = P1V1/P2

V2 = (1  × 50.0 ) / 0.95

     = 52. 63 L

Thus, If a small weather balloon with a volume of 50.0 L at a pressure of 1.00 atm was developed at the edge of Typhoon odissa , the volume of the balloon when it reaches the center was 52.63L

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The independent variable is amount of water

It is a variable that stands alone and isn't changed by the other variables you are trying to measure called independent variable

Here given data is four bean seeds were placed in each of four pots. Each pot contained 100 cubic centimeters of soil All four pots were placed on the same sunny windowsill A different amount of water was placed in each pot then in the first pot 0ml of water are placed and in the second pot 10ml water are placed and in the third pot 20ml water are placed and in the fourth pot 40ml water are placed so, because of high concentration of water the seed germinate in fourth pot are fast other than three pot and all constant in all four pot are soil seed sunrays or container this all are same only amount of water are different and dependent variable is germination

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438 m g l of HCI is in 1.75 L of concentrated HCI .

A specific amount of solution's concentration relates to the amount of acid or basic that is present. If there is a lot of acid or base in a little amount of solution, it is said to be concentrated. If there is little acid or base in a given volume of solution, it is said to be diluted. Acidic is defined as having a pH below 7. Once the pH reaches 7, it is referred to as basic. Hydronium concentrations in acidic solutions are high, while hydroxide concentrations are low. Hydroxide concentrations in basic solutions are high, while hydronium concentrations are lower. The stronger an acid is, the lower the pH is for a given concentration in aqueous solution. Acid solutions have a pH that decreases with increasing concentration.

the quotient….

Molality = moles of solute/kilograms of solvent .

Whereas…

Molarity = moles of solute/volume of solution in liters.

It's only an estimate, but 1.18 g/mL x 1000 mL x 0.37 = around 437 g.

Then, mols in that 1 L = grams/molar mass

= approximately 437/36.5

= roughly 12 M, according to a different calculation.

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Answer:. Chemical symbol for ion is :    S,  16 electrons,

Explanation: If you add the electrons (which is the exponents of each one you get:

2 + 2+ 6+2+4 = 16.  So the atom has 16 protons and 16 neutrons.  Neutrons have no charge and protons are positive so to balance out the 16 positive protons there are 16 electrons.   The atomic number is 16 and on the periodic table that is sulfur.  The symbol is S.

3 d orbitals are vacant in sulphur but are accessible, so it can make strong covalent bonds.  

Answer:

A. The ion is Ar^2+

B. 18

C. 0

Explanation:

There are total of 2 + 2 + 6 + 2 + 4 = 16 electrons

since the cation is +2, it's neutral state should be 16 + 2 = 18

A. The ion is Ar^2+

B. 18

C. since 3p => 4s => 3d, so there is no 3d

Instead of snowcapped mountains that store water in anticipation of warmer temperatures, the majority of our drinking water comes from underground "mountains" of porous materials called aquifers that are replenished by rain. The Biscayne Aquifer is the primary source of fresh water for South Florida's lower east coast.

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