1. The reaction below shows the formation of Water Vapour. What is the volume of water vapour obtained when 2.5 L of Oxygen are consumed?

2H2(g) + O2(g) == 2H2O(g)

a. 1.0 L

b. 2.5 L

C. 5.0 L

D. 0.5 L

2. What is the mass of 84.5 ml of carbon dioxide gas at SATP?

a. 0.150 g

b. 0.164 g

c. 0.149 g

d. 0.15 g

3. Calculate the approximate volume of 5.6 grams of carbon monoxide at a temperature of 25.80 degrees celsius and a pressure of 250.0 kPa

a. 1.99 L

b. 1.98 L

c. 1.987 L

d. 2.0 L

4. At constant pressure and 35 degrees celsius, a sample of gas occupies 3800 mL. At what temperature will the gas occupy 7.50 L?

a. 600 K

b. 335 degrees celsius

c. -116 degrees celsius

d. 156 K

5. How many grams of carbon dioxide are present in 1800 mL at S.T.P?

6. The practice of releasing helium balloons into the atmosphere has many environmental consequences for wildlife and some countries have banned the practice. When these balloons are released into the atmosphere, the balloons initially rise to higher altitudes and increase in volume. This increase in volume is most likely due to

a. A decrease in the pressure of the atmosphere on the balloon.

b. An increase in the temperature of the gas in the balloon

c. An increase in the pressure of the atmosphere on the balloon

d. A decrease in the temperature of the gas in the balloon