Question

The volume of a mass of gas is 300 ml at 25°C and 685 torr. What will the gas occupy at STP?

Will the temperatures be the same when I do (P1V1/T1) = (P2V2/T2) ?

Answer 1

No. The T is 25C and STP is 0 C. Remember must be in kelvin.

Answer 2

So would 248 ml be correct

Answer 3

yes. See above.