Charles and Boyle's laws

A balloon with a volume of 200 mL at 30 ^οC is submerged in hot water to obtain a temperature of 50 ^οC.  What will happen to the volume of the balloon if the pressure remains the same?

• the volume of the balloon will become higher than 200 mL
• the volume of the balloon will become lower than 200 mL
• the volume of the balloon will stay the same
• there is no enough data

The pressure on a sample of gas is increased from 1.0 atm to 3.0 atm. If the new volume is 0.52 L, find the original volume.

• 0.52 L
• 1.56 L
• 0.173 L
• 1.00 L

What is the new volume of the gas if the pressure on 350 L of oxygen at 720 mm Hg is decreased to 600 mm Hg?

• 420 L
• 29.16 L
• 4200.0 L
• 291.6 L

The relationship between volume and temperature can be best described as ______________. 

• direct proportionality
• constant proportionality
• direct squared proportionality
• inverse proportionality

Julian and Jimmy are playing basketball outside in 82°C weather. If they leave the ball outside and temperature drops down to 53°C, what will happen to the volume of the gas in the ball if the pressure remains constant?

• volume will remain the same
• volume will increase
• volume will decrease
• volume will double in size

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

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