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Worksheets

Gases Review

Total questions: 9

Worksheet time: 9mins

Name
Class
Date
1.

Given the following reaction for photosynthesis,

6 CO2 + 6 H2O → C6H12O6 + 6 O2,

how many liters of O2 can be produced from 100 g of water at standard temperature and pressure?

a)

1.49 L

b)

24.8 L

c)

80.4 L

d)

124 L

2.

What is the new pressure of 150 mL of a gas that is compressed to 50 mL when the original pressure was 3.0 atm and the temperature is held constant?

a)

100 atm

b)

0.90 atm

c)

1.0 atm

d)

9.0 atm

3.

A sample of a gas in a rigid container at 30.0°C and 2.00 atm has its temperature increased to 40.0°C. What will be the new pressure?

a)

1.50 atm

b)

2.67 atm

c)

2.07 atm

d)

6.04 atm

4.

What is the volume of 1 mole of gas at Standard Temperature and Pressure (STP)?

a)

0.024 L

b)

22.4 L

c)

2.4 L

d)

0.24 L

5.

Calculate the approximate volume of a 1.50 mol sample of gas at 15.0oC and a pressure of 3.75 atm.

a)

1.73 L

b)

5.93 L

c)

8.65 L

d)

9.46 L

6.

Which statement best characterizes the data in the table above?

a)

The volume and pressure values are randomly related.

b)

As the pressure increases, the volume also increases.

c)

As the volume decreases, the pressure increases.

d)

The volume seems to jump around, going up and then down.

7.

The unbalanced equation for the combustion of methane is shown below.

___ CH4 + ___ O2 → ___ H2O + ___ CO2

If 2.6 L of methane are combusted, how many grams of water are produced? Record your answer with correct significant figures.

(a)  

8.

4NH3(g) + 3O2(g) 2N2(g) + 6H2O(g)

Suppose 17.0 grams of ammonia react completely with oxygen. How many liters of nitrogen will be produced at STP?

a)

11.2

b)

14.0

c)

22.4

d)

28.0

9.

Which of the following statements is related to a postulate (assumption) of the kinetic molecular theory of gases?

a)

Gas particles are in constant motion, giving them a large amount of potential energy.

b)

Gas particles are in constant motion so they lose kinetic energy when they collide with the walls of their container.

c)

Gas particles are in constant motion because they are strongly attracted to each other.

d)

Gas particles are in constant motion and are very far apart compared to their size.