A sample of gas measures 2.5 liters @ 298K.what will be its volume when its temp is changed to 268K?

Question

2) A 500 liter volume of helium gas is at a pressure of 750mm of hg and has a temp of 300K.what is the volume of the same gas at 600 mm of Hg and 200K??

3)A sample of gas measures 5.00 liters at 1.00 atm. To change its volume to 3.5 liters at constant temp. what pressure must be applied?

4) A sample of gas measures 3.5 liters at 273K. At what temp will its volume become 4.50 liters assuming pressure remains constant?

5)A 5.0 liter tank of Oxygen gas is at a pressure of 3.0 atm. what volume of oxygen will be available if the oxygen is used at normal atmospheric pressures of 1.0 atm?

Answer 1

1) V1 / T1 = V2 / T2

2) (P1 x V1) / T1 = (P2 x V2) / T2

3) P1 x V1 = P2 x V2

4) V1 / T1 = V2 / T2

5) P1 x V1 = P2 x V2