1. Grudgeball
Gas Laws

2. Round 1
Looking for: Correct numerical value, sig figs, unit cancellation

3. Round 1
If the initial volume of a gas is 4.30 L at constant temperature and 1.00 atm of pressure, what is the final volume if the pressure is lowered to atm?

4. Round 1
How many moles of gas occupy 98 L at a pressure of 2.8 atmospheres and a temperature of 292 K?

5. Round 1
A balloon is filled with 35.0 L of helium in the morning when the temperature is 20.00oC. By noon the temperature has risen to oC. What is the new volume of the balloon?

6. Round 1
A 35 L tank of oxygen is at 315 K with an internal pressure of 190 atmospheres. How many moles of gas does the tank contain?

7. Round 1
A balloon that can hold 85 L of air is inflated with 3.5 moles of gas at a pressure of 1.0 atmosphere. What is the temperature in 0 C of the balloon?

8. Round 1
CaCO3 decomposes at 12000C to form CO2 gas and CaO. If 25 L of CO2 are collected at 12000C, what will the volume of this gas be after it cools to 250C?

9. Round 1
A helium balloon with an internal pressure of 1.00 atm and a volume of 4.50 L at 20.0oC is released. What volume will the balloon occupy at an altitude where the pressure is atm and the temperature is –20.0oC?

10. Round 2

11. Round 2
If 4.00 moles of gasoline (octane) are burned, what volume of oxygen is needed if the pressure is atm, and the temperature is 35.0°C?

12. Round 2
If you burned one gallon of propane (approximately 4000 grams), how many liters of carbon dioxide would be produced at a temperature of 21.0°C and a pressure of 1.00 atm?

13. Round 2
If excess liquid carbon disulfide reacts with 450. mL of oxygen to produce carbon dioxide and sulfur dioxide, what volume of each product is produced?

14. Round 2
Solid iron reacts with sulfuric acid to produce iron (II) sulfate and hydrogen gas. If 650. mL of hydrogen gas are collected at STP, how many grams of iron (II) sulfate are also produced?

15. Round 2
723.4 ml of helium gas was collected over water at 80oC and mm Hg. How many grams of helium gas were collected? ( g)

16. Round 2
For the combustion of propane, what volume of oxygen gas at 25oC and 1.04 atm is needed for the complete combustion of 5.53 g of propane.

17. Round 2
NaN3 decomposes into sodium metal and nitrogen gas. At what pressure is the nitrogen gas sample that is collected when 48.4 g of NaN3 decomposes? The temperature of the gas is 25°C and the volume is 18.4 L.