Chemistry High School

Hey guys! How is the answer C? I need steps plz

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Answer 1

So basically the answer is c bc if your dividing then multiplying you’d boils get your answer

Related Questions

Explain how you can find the number of neutrons in the isotope nitrogen-16

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Answer:

Explanation:

Nitrogen-16

Atomic number of nitrogen= 7

electrons=7

protons=7

neutrons= ?

Nitrogen-'16'= 16 means the mass

16-7= 9

There are 9 neutrons in Nitrogen-16

Scientists theorize that the original point of matter from which our universe formed was smaller than a dime. This matter would also have:

a. had unimaginable mass
b. been incredibly dense
c. had unimaginable potential energy
d. all of the above

Answers

ANSWER:

B. been incredibly dense? I'm not sure sorry

Calculate the normality of a solution made by diluting 12 g of H3PO4 with water to produce 250.0 mL of solution.

Answers

The normality of a solution made by diluting 12 g of H3PO4 with water to produce 250.0 mL of solution is 1.47 eq/L.

The normality of a solution is;

N = Mass of solute in grams/volume of solution in litres × Equivalent weight

Mass of solute = 12 g

volume of solution = 250.0 mL or 0.25 L

Equivalent weight = Molar mass of H3PO4/n

n = Number of hydrogen ions in H3PO4

Equivalent weight = 98 g/mol/3 = 32.7

Substituting values;

N = 12/0.25 × 32.7

N = 1.47 eq/L

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a) Identify which one of the particles is
I) an anion.

2) a cation

Answers

Answer: Particle F is an anion, and particle E is a cation

Explanation:

A particle is a cation if it has more protons than electrons.

A particle is an anion if it has more electrons than protons.

Hope it helps :) and let me know if you want me to elaborate.

Which among the following is not present in pure sugar ?
[A] Carbon
[B] Hydrogen
[C] Nitrogen
[D] Oxygen

Answers

Answer:

Nitrogen

Explanation:

Pure sugar is sucrose C12H22011

how many ounces in a small can of crushed pineapple?

Answers

Answer:

Hey mate.....

Explanation:

This is ur answer.....

Crushed Pineapple in 100% Pineapple Juice 8 oz can.

Hope it helps!

Brainliest pls!

Follow me! ;)

Please someone help WHATS the answer

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the average atomic mass: 40.078 u
electron configuration is the long list underneath the name "calcium" on the element. it starts with 1s^2s^2

What are the 4 properties of substances that contain Hydrogen Bonds?

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Answer:

Increase in the melting point, boiling point, solubility, and viscosity of many compounds can be explained by the concept of hydrogen bonding

Explanation:

melting point- when does the solid melt to a liquid

boiling point - a temperature when a liquid will turn into a gas

solubility -solubility is ability of a substance, the solute, to form a solution with another substance

viscosity- Viscosity is a measure of a fluid's resistance to flow. It describes the internal friction of a moving fluid. ( basically how thick it is)

Answer:

Melting point, boiling point, solubillity and viscosity of many substances

Hope this helped you

How does energy move through a wave? 3 evidence and reasons supporting you answer.

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Sound, energy and radio travel in waves

. Identify molecules of elements;
O2, NH3, He

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Elements can be made of one atom, like He, or be elemental molecules, such as hydrogen (H2), oxygen (O2), chlorine (Cl2), ozone (O3), and sulfur (S8). Atoms are not drawn to scale. Some elements are monatomic, meaning they are made of a single (mon-) atom (-atomic) in their molecular form...

what is the empirical formula of hydro carbon 7.7% by mass of hydrogen and 92.3% by mass of carbon

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Answer: A hydrocarbon contains 92.3% by mass of carbon and 7.7% by mass of hydrogen. The empirical formula of the compound will be oose answer:

CH CH5 CH CH3.

Explanation: :)

What is the word equation for Sodium Hypochlorite?

Answers

Answer:

Can u phrase differently?

Answer:

If you are looking for the formula, then it is NaOCl

Explanation:

What were the first 5 planets that were observed? Why were those the only ones? Help pls!

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Mercury Venus mars Jupiter Saturn

how many different types of nucleotides are found in nucleic acids

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Answer: four different types!!!!

Explanation:

Select the atom that will attract the electron pair (:) more strongly (the atom with the greater electronegativity)

HELP PLEASE

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24. F:H :) because Fluorine is the most electronegative

Astronomers often scan the sky using devices called radio
telescopes. What can you conclude about these devices?

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Answer:

A radio telescope is simply a telescope that is designed to receive radio waves from space.

radio telescopes helps to study naturally occurring radio light from stars, galaxies, black holes, and other astronomical objects. We can also use them to transmit and reflect radio light off of planetary bodies in our solar system.

Answer: stronomers often scan the sky using devices called radio telescopes. What can you conclude about these devices? ... They pick up the radio waves emitted by stars.

A species acts as a(n) _____ agent if it gains electrons in a half-reaction. Conversely, it could potentially act as a(n) _____ agent if it loses electrons in a half-reaction.

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A species acts as an oxidizing agent if it gains electrons in a half-reaction. Conversely, it could potentially act as a reducing agent if it loses electrons in a half-reaction.

REDOX REACTION:

Redox (oxidation-reduction) reaction is a type of reaction that involves the loss and gain of electrons by substances involved.

Redox reaction involves a reducing agent and an oxidizing agent. Oxidizing agent gains electrons in a redox reaction while reducing agent loses electrons.

Oxidizing agent gets reduced in the process while reducing agent gets oxidized.

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define suspension with example:

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Suspension in science refers to a mixture where a solid particle does not dissolve in a liquid solution. ... Examples of suspended solutions include salt water, sand in water, and muddy water.

The littoral zone is rich in nutrients
true or false

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Answer:

false

Explanation:

what are the uses of the periodic table

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Answer:

In today's world, the periodic table is very valuable for both students and scientists since it allows them to forecast the sorts of chemical reactions in which a specific element is likely to engage. Rather than memorizing facts and figures for each element, students and scientists can learn a great deal by simply looking at the table. They can learn about an element's reactivity, whether it is likely to conduct electricity, whether it is hard or soft, and many other characteristics by simply looking at the table.

Groups are made up of elements that are in the same column as one another and have attributes that are comparable to one another. If we look at the first column (the alkali metals), for example, we see that they are all metals that have a 1+ charge in reactions, react quickly with water and combine easily with nonmetals.

Periods are made up of elements that are arranged in a row next to one another and have the same maximum unexcited electron energy level as one another.

The periodic table also has the advantage of providing all the information you need to balance chemical processes at a glance, which is a very valuable feature. The atomic number and, in most cases, the atomic weight of each element are included in the table. The group of an element indicates the characteristic charge of that element.

Explanation:

I had graduated cylinder with 50 mL of water. I added a rock to the graduated cylinder and the water level rose to 56 mL. What is the VOLUME of the rock?

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Take 56 mL and subtract the original volume of 50 mL and that will give you the volume of the rock, which is 6mL.

Convert –26 degree Celsius temperature into kelvin .

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Just add 273 to turn it into Kelvin

How many cobalt atoms are in 2 moles of cobalt?

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That means that one mole of cobalt weighs 58.9332 grams (58.9332 g/mol). Based on that information, to convert 2 moles of cobalt to grams, we multiply 2 moles of cobalt by 58.9332.

12.04428152 x [tex]10^{23}[/tex] cobalt atoms are in 2 moles of cobalt.

What are moles?

A mole is defined as 6.02214076 ×[tex]10^{23}[/tex]

of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

One mole of cobalt is equal to 6.02214076 ×[tex]10^{23}[/tex] atoms.

2 moles of cobalt is equal to 6.02214076 × [tex]10^{23}[/tex]atoms x 2

12.04428152 x [tex]10^{23}[/tex]

Hence, 12.04428152 x [tex]10^{23}[/tex]cobalt atoms are in 2 moles of cobalt.

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Elabore el balance de la ecuación por oxido reducción enumerando cada paso
CaC2O4 + KMnO4 + H2SO4 → CaSO4 + MnSO4 + K2SO4 + CO2 + H2O

Answers

Answer:

[tex]{ \rm{5CaC _{2}O _{4(aq)}+ 2KMnO _{4(aq)} + 8H _{2} SO _{4(aq)} → 5CaSO _{4(s)}+ 2Mn SO _{4(aq)}+ K _{2} SO _{4(s)} + 10CO _{2(g)} + 8H _{2} O _{l} }}[/tex]

Explanation:

This is a redox reaction formed by combining two half equations.

Check the image above, sorry if my handwriting is poor :(

Convert 25 gigaseconds into centiseconds

Answers

25 gigaseconds is equal to 2,500,000,000,000 centiseconds

calculate the mass of butane needed to produce 64.1 g of carbon dioxide to three significant figures and appropriate units

Answers

Answer:

21.2 gm

Explanation:

calculate the mass of butane needed to produce 64.1 g of carbon dioxide to three significant figures and appropriate units

butane is the hydrocarbon C4H10

in combustion, we react hydrocarbons with O2 to form CO2 and H2O

C4H10 + O2----------------> CO2 + H2O

BALANCE

2C4H10 + 1302--------> 8CO2 + 10 H2O

the molar mass of CO2 is 12 + 16X2 = 44

64.1 gm of CO2 is

64.1/44 = 1.46 MOLES OF CO2,

FOR EVERY 8 MOLES OF CO2 WE NEED 2 MOLES OF BUTANE IT IS A

8:2 OR 4:1 RATIO. THE MOLES OF C4H10 ARE 1/4 THE MOLES OF CO2

THE MOLES OF C4H10 H10 ARE 1.46/4 =0.365 MOLES

THE MOLAR MASS OF BUTANE IS 58.12

0.365 MOLES OF C4H10 HAS A MASS OF 0.365 X 58.12 = 21.2 gm

What do the electron configurations of the elements Mo and Pt have in common?

Answers

Answer:

All of the elements in a period have the same number of atomic orbitals. For example, every element in the top row (the first period) has one orbital for its electrons. All of the elements in the second row (the second period) have two orbitals for their electrons.

Explanation:

Count the following atoms
NEED ANSWER ASAP

Answers

Just use the subscripts
You have 4 hydrogens in one NH4 compound, and you have 3 NH4, so that gives you 12 H and 3 N.
You also have a coefficient of 2 in front of (NH4)3, so that means you would multiply 12 H atoms by 2 and 3 N by 2, giving you 24 hydrogen atoms and 6 nitrogen atoms.
You also have 1 Phosphorus atom, and 4 oxygen atoms, so now add all your individual atoms up:
24 hydrogen + 6 Nitrogen + 1 Phosphorus + 4 Oxygen = 35 atoms in total

What will the final temperature of the a block of brass with a mass of 30.6 g is at 87.4°C
after it's added to 62.3 g of water at 28.3°C. The specific heat of aluminum is 0.380
J/gºC.

Answers

The final temperature of the block of brass with a mass of 30.6 g at 87.4°C is 30.82°C.

SPECIFIC HEAT CAPACITY:

The amount of heat absorbed or released by a substance can be calculated using the following formula:

Q = m × c × ∆T

Q(water) = - Q(metal)

(m × c × ∆T) water = - (m × c × ∆T) metal

According to this question;

METAL:

m = 30.6gc = 0.380 J/g°C∆T = T - 87.4°C

WATER:

m = 62.3gc = 4.184J/g°C∆T = T - 28.3°C

62.3 × 4.184 × (T - 28.3) = - {30.6 × 0.380 × (T - 87.4)}

260.7T - 7376.8 = - {11.63T - 1016.3}

260.7T - 7376.8 = -11.63T + 1016.3

260.7T + 11.63T = 1016.3 + 7376.8

272.33T = 8393.1

T = 8393.1 ÷ 272.33

T = 30.82°C

Therefore, the final temperature of the block of brass with a mass of 30.6 g at 87.4°C is 30.82°C.

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A clear liquid in an open container is allowed to evaporate. After three days, a solid is left in the container. Was the clear
liquid an element, a compound, or a mixture?

Answers

The liquid did not chemically bond after 3 days, therefor it is a mixture.

Hope this helps!

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