In an closed vessel 300 torr of argon gas is filled and the vessel heated to 925 degree celcius from room temperature. What will be the pressure at 925 degree celcius .

Answer 1

P2/P1=T2/T1

solve for P2

change temps to Kelvins

Answer 2

In your case, P1 = 300 torr = 0.395 atm,
T1 = 295 K (22 C) (room temperature)
T2 = 1198 K

Answer 3

Note the correct spelling of celsius.