Chem Help Quick!!?

Question

1. A gas occupies 12.3 liters at a pressure of 40.0 mm Hg. What is the volume when the pressure is increased to 60.0mm Hg?

2. If a gas at 25.0 degrees Celsius occupies 3.60 liters at a pressure of 1.00 atm, what will be its volume at a pressure of 2.50 atm?

3. Calcute the change in temperature when 2.00 L at 20.0 degrees celsius is compressed to 1.00 L?

Answer 1

1. P1V1 = P2V2 V2 = P1V1/P2
V2 = (40.0)(12.3)/60.0) = 2/3(12.3) = 8.2L

2. P1V1 = P2V2 V2 = P1V1/P2
V2 = (1.00)(3.60)/(2.50) = 1.44L