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bogdanovich [222]
2 years ago
6

Match each item with the correct statement below.

Chemistry
1 answer:
Semenov [28]2 years ago
7 0
The terms and their definitions are as follows:

1. Energy
B. The capacity to do work.
Energy comes in different forms, each relating to a different type of work. For example, kinetic energy and potential energy.

2. Volatile
D. Substance that changes to gas easily at room temperature
Volatile substances do not have strong attractive forces between their molecules, so they are easily overcome at room temperature and the substance evaporate. For example, petrol.

3. Chemical Reaction
H. Another term for chemical change

4. Chemical Change
G. <span>The change of one or more substances into other substances
</span>Chemical changes involve rearrangement or removal of atoms from a substance

5. Endothermic
J. Any chemical reaction that absorbs energy
These reactions require the addition of heat energy to take place

6. Exothermic
F. Any chemical reaction that gives off energy
Exothermic reactions are associated with a rise in temperature of the system

7. Density
I. The amount of matter contained in a unit volume
Density is characteristic of a substance and independent of the amount that is present

8. Physical property
A. Can be observed without any change in the identity of the substance
Physical changes include breaking and state changes

9. Law of conservation of mass
E<span>.The fact that matter can be neither created nor destroyed in a chemical change. 
This is true for any reaction in the universe

10. Chemical property
</span><span>C. Can be observed only when there is a change in composition of a substance

11. Physical Change
K. </span>The type of change in which the identity of substances does not change
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<u>Answer:</u> The amount of water that can be formed is 160 moles

<u>Explanation:</u>

We are given:

Moles of hydrogen gas = 170 moles

Moles of oxygen gas = 80 moles

The chemical equation for the reaction of hydrogen gas and oxygen gas follows:

2H_2+O_2\rightarrow 2H_2O

By Stoichiometry of the reaction:

1 mole of oxygen gas reacts with 2 moles of hydrogen gas

So, 80 moles of oxygen gas will react with = \frac{2}{1}\times 80=160mol of hydrogen gas

As, given amount of hydrogen gas is more than the required amount. So, it is considered as an excess reagent.

Thus, oxygen gas is considered as a limiting reagent because it limits the formation of product.

By Stoichiometry of the reaction:

1 mole of oxygen gas produces 2 moles of water

So, 80 moles of oxygen gas will produce = \frac{2}{1}\times 80=160moles of water

Hence, the amount of water that can be formed is 160 moles

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