Gases Review

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?

• 1.49 L

• 24.8 L

• 80.4 L

• 124 L

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?

• 100 atm

• 0.90 atm

• 1.0 atm

• 9.0 atm

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?

• 1.50 atm

• 2.67 atm

• 2.07 atm

• 6.04 atm

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

• 0.024 L

• 22.4 L

• 2.4 L

• 0.24 L

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

• 1.73 L

• 5.93 L

• 8.65 L

• 9.46 L

Which statement best characterizes the data in the table above?

• The volume and pressure values are randomly related.

• As the pressure increases, the volume also increases.

• As the volume decreases, the pressure increases.

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

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.

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?

• 11.2

• 14.0

• 22.4

• 28.0

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

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

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

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

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