Gas Laws

A sample of hydrogen at 1.5 atm had its pressure decreased to 0.50 atm producing a new volume of 750 mL. What was its original volume?

• 245 ml

• 345 ml

• 123 ml

• 250.mL

1. A sample of oxygen gas occupies a volume of 250.mL at 740. torr pressure. What volume will it occupy at 800. torr pressure?

• 266 ML

• 245 ML

• 231 ML

• 217 ML

What type of relationship is Charles' Law?

• Inverse
• Direct
• Not enough information
• #goals

There are 40 liters of helium in a balloon at 100 K. If the temperature of the balloon is increased to 200 K, what will the new volume of the balloon be?

• 80 L
• 45 L
• 54 L
• 45.33 L

There are 65 liters of helium in a balloon at 35 K. If the temperature of the balloon is increased to 40 K, what will the new volume of the balloon be?

• 40 L
• 70 L
• 74.3 L
• 75.9 L

The relationship of which two variables are compared in Gay-Lussac’s Law?

• pressure & volume
• volume & temperature
• temperature & pressure
• volume & moles (amount of gas)

What is the formula for Gay-Lussac’s Law?

• P₁/T₁ = P₂/T₂
• P₁/V₁ = P₂/V₂
• T₁/P₁ = T₂/P₂
•  P₁•T₁ = P₂ • T₂

At constant volume, what happens to temperature of a gas when the pressure doubles?

• The temperature also doubles.
• The temperature decreases to half its original volume.
• The temperature doesn't change.
• The temperature quadruples.

The oxygen tanks on the sideline can be very dangerous if heated. Suppose an oxygen tank has a pressure of 120 atm at a room temperature of 25°C. If the temperature on the turf or field increases to 51°C, what will the resulting pressure of the oxygen tank be if the volume and amount of gas does not change?

• 130 atm
• 804 atm
• 1.30 atm
• 254 atm

A gas at 98 kpa, and 29 C occupies a volume of 569 L. Calculate the volume at 39 kpa and -12 C.

• 1350.00 L
• 1232.30 L
• 1400.10 L
• 1429.79 L