MiniLab 1 How might you account for the possible popping of the bag containing the subliming dry ice?

What physical conditions are specified by the term STP?

Would chlorine gas be suitable for weather balloons? Explain.

Explain why the density of a popped kernel of popcorn is less than that of an unpopped kernel.

Compare the amount of oxygen you would receive in an HBO chamber with the amount you would receive breathing ordinary air.

Aerosol Cans Use the kinetic theory to explain why pressurized cans carry the message "Do not incinerate."

A $120-\mathrm{mL}$ sample of nitrogen is collected at $900 \mathrm{~mm} \mathrm{Hg}$ and $0^{\circ} \mathrm{C}$. What volume will the nitrogen have when its temperature rises to $100^{\circ} \mathrm{C}$ and the pressure increases to $15 \mathrm{~atm}$ ?

Compare and contrast how a barometer and a tire-pressure gauge measure gas pressure.

A sample of carbon dioxide is collected at STP. Its volume is $500 \mathrm{~L}$. What volume will it have if the pressure is $380 \mathrm{~mm} \mathrm{Hg}$ and the temperature is $100^{\circ} \mathrm{C}$ ?

A sample of argon gas is compressed into a volume of 0.712 L by a piston exerting a pressure of 3.92 atm of pressure. The piston is slowly released until the pressure of the gas is 1.50 atm. The new volume of the gas is

a) 0.272 L. b) 3.67 L. c) 1.86 L. d) 4.19 L.

Analyzing If the volume of a helium-filled balloon increases by 20 percent at constant temperature, what will the percentage change in the pressure be?

If the valve in a tire pump with a volume of $0.78 \mathrm{~L}$ fails at a pressure of $9.00 \mathrm{~atm}$, what would be the volume of air in the cylinder just before the valve fails?

A 45-mL sample of ammonia gas at STP is heated to 73 degree C at constant pressure. What will the volume be?

The volume of gas at 101 kPa is 400 mL. If the pressure changes at constant temperature to 404 kPa, what will the new volume be?