Exit ticket: Boyle, Charles, and Combined gas laws

A sample of oxygen at 40.°C occupies 820. mL. If this sample later occupies 1250 mL at 60.°C and 1.40 atm, what was its original pressure?

• 2.0 atm

• 2.5 atm

• 3.9 atm

• 4.6 atm

You have a 0.252 mL bubble of oxygen in your blood stream where the atmospheric pressure is 760. mmHg. Upon ascending up a mountain, the atmospheric pressure drops to 10.0 mmHg. What is the volume of the oxygen bubble at your new elevation?

• 12.9 mL

• 18.6 mL

• 19.2 mL

• 22.4 mL

A 23.1 L balloon at 22°C is placed in the arctic where the temperature is -5°C. What is the final volume of the balloon?

• 15.7 L

• 19.8 L

• 21.0 L

• 23.8 L