What is the volume of a gas at 0.785 atm if it has the volume of 2.5 L at 1.02 atm?

Answer 1

Boyles Law. P1×V1=P2×V2

(X)×(0.785)= (2.5)×(1.02)

Answer 2

Jan

From the ideal gas law pV= n RT

Here n, R,T are constant.

So pV will always be constant

So if v is the required volume 0.785 v = 2.5 x 1.02, so v = 3.2484 l

Your original data has 3, 2, 3 significant figures so you should quote your final answer to 2 significant figures ie 3.2 l

Mike