Given the reaction:
2KCIO3(s) - 2KCl(s) + 302(g)
What is the total number of moles of KCIO3(s) needed to
produce 6 moles of O2(g)?

Answer:

4 moles of potassium chlorate must be used to produce 6 moles of oxygen gas.

Explanation:

From the above reaction:

2KCIO3(s) - 2KCl(s) + 3O2(g)

where,

KCl = Potassium Chloride,

O2 = Oxygen

KClO3 = Potassium chlorate

To calculate the number of moles for KClO3

If 3 moles of O2 gives 2 moles of KClO3

then 6 moles of O2 gives 6/3 x 2 = 4 moles of KClO3.

Hence, 4 moles of KClO3 produces 6 moles of O2.

Moles are "a unit of measurement for chemicals, just as meters are measurement units for length and grams are measurement units for mass".

What is Potassium Chloride?

Potassium Chloride is a "metal halide composed of potassium and chloride".

Oxygen is "an element with atomic symbol O, atomic number 8, and atomic weight 16".

Potassium chlorate is "an important potassium compound that can be used as an oxidizer, disinfectant, source of oxygen, and component in pyrotechnics and chemistry demonstrations".

To learn more about Potassium Chlorate here

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Multiple Choice: Encircle the letter of the correct answer.
1. Which type of matter has the molecules packed closer together?
a. Solid
b. Liquid
c. Gas
d. Plasma
2. Matter is made up of __________.
a. Molecules
b. Particles
c. Atom
d. All of them
3. Particles with more energy move ________ than particles with less
energy.
a. Slower and closer together
b. Slower and farther apart
c. Faster and farther apart
d. Faster and closer together
4. Which best describes the particles in a liquid?
a. More freely moving than a gas
b. More freely moving than a
solid
c. Less freely moving than a
solid
d. Completely unmoving
5. Which of the following statements describes a mass?
a. The force of attraction between two bodies.
b. The force of gravity exerts on a body of mass.
c. The amount of matter in an object.
d. The weight of the object from place to place.
6. Any sample of matter has mass and takes up space. The main reason
for this is because __________.
a. All matter is heavy
b. Matter can be a gas
c. Matter is made up of tiny particles that have mass and take up space
d. The Earth is made of matter
7. When a thermometer is heated, the red liquid inside the thermometer
moves up. This is mainly because __________.
a. The red liquid is thin.
b. The molecules of the liquid move faster and get a little further apart
c. Hot liquid is lighter
d. The glass of the thermometer gets hot
For question numbers 8-10,
8. To describe a liquid, you could say:
a. The particles of a liquid are not attracted to one another
b. The particles of a liquid are in motion
c. The particles of a liquid are not able to move past one another
d. A liquid has no mass but takes up space
9. To describe a solid, you could say:
a. The particles of a solid are not attracted to each other
b. The particles of a solid can move past one another
c. The particles of a solid vibrate but do not move past one another
d. A solid has mass but does not take up space
10. To describe a gas, you could say:
a. The particles are very attracted to each other
b. The particles are not very attracted to each other
c. The particles are close together like a liquid
d. The particles of a gas are closer apart than the particles in a liquid or
solid

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How many moles of O2 are needed to react with 4.0 moles of
C6H6?

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B. 12 moles
C. 4.0 moles
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When molecules evaporate they are gaining enough _______ to break the forces of __________ holding them together. This might be compared to the popping of popcorn.


Why can't we see the vapour molecules that have escaped?.


How does increasing the heat affect the rate of molecules popping out into the vapour state?


The colder molecules get, the _________ they move

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what mixture is salt and water?
a.solutions
b.colloids
c.suspensions
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What is the molarity of a solution in which 35 mole of AgNO3 is dissolved in 5 L of solution?

What are water and carbon dioxide converted into by the end of
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air and sunlight
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C. Electron pairs move apart to form more stable molecules.
D. Atoms rearrange in molecules to form new compounds.

Which of the following is
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A) Direction only
B) Direction & time
C) Distance & direction
D) Distance, time and direction
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Distance & Direction
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