Question

A gas has a pressure of 4.62 atm when its volume is 2.33 l. what will be the pressure in torr when the volume is changed to 1.03 l?

Answer 1

We know that the pressure, volume and temperature keeps a relations as follows: 
P*V/T = constant  
If we consider that the temperature keeps the same value from state 1 to state 2, then we have: 
P1*V1 = P2*V2  
4.62*2.33 = P2*1.03  
Then P2 = 10.45 atm  
Finally we know that 1 atm is 760 torr, so then the final pressure will be: 
P2 = 10.45 * 760 = 7942 torr