New Worksheet - Chemistry - Combined Gas Law

0 ˚C = 273.15 K
P1V 1 / T 1 = P2 V2 / T2
1.000 atm = 101.3 kPa
760.0 torr = 1.000 atm
760.0 mmHg = 1.000 atm

Problem 1
A balloon is filled with air so that its volume is 5.6 L at 22.0 ˚C. It is then lowered into a vat of liquid nitrogen so that it reaches a temperature of – 185.0 ˚C. Assuming that the pressure stays constant, what is the new volume?
Answer: ________________

Problem 2
Write out the balanced equation that shows that nitrogen trihydride reacts with oxygen to form nitrogen monoxide and water.
Answer: ________________

Problem 3
A balloon is filled with helium at a temperature of 25.0 ˚C and a pressure of 755 mmHg so that its volume is 6.65 L. It then rises to an altitude where the temperature is 15.0 ˚C and the pressure is 625 mmHg. What is its volume at that altitude?
Answer: ________________

Problem 4
A chemist collects 56.7 mL of nitrogen gas at 25 ˚C and 740 torr. What would the volume be if the temperature is lowered to 273 K and the pressure is raised to 1.00 atm?
Answer: ________________

Problem 5
A chemist collects 83.2 mL of oxygen gas at 32 ˚C and 560 torr. What would the volume be if the temperature is lowered to 273 K and the pressure is raised to 1.00 atm?
Answer: ________________

Problem 6
A balloon is filled with air so that its volume is 2.7 L at 15.0 ˚C. It is then lowered into a vat of liquid nitrogen so that it reaches a temperature of – 117.0 ˚C. Assuming that the pressure stays constant, what is the new volume?
Answer: ________________

Problem 7
A chemist collects 63.2 mL of nitrogen gas at 12 ˚C and 890 torr. What would the volume be if the temperature is lowered to 251 K and the pressure is raised to 1.24 atm?
Answer: ________________

Problem 8
A balloon is filled with helium at a temperature of 22.3 ˚C and a pressure of 856 mmHg so that its volume is 7.91 L. It then rises to an altitude where the temperature is 12.9 ˚C and the pressure is 527 mmHg. What is its volume at that altitude?
Answer: ________________


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