A sample of gas at 57C and 1.02atm occupies a volume of 2.20L. What volume would this gas occupy at 107C and 0.789atm?

T1 = 57 + 273

T2 = 107 + 273

P1 V1/T1 = P2 V2/T1

P1 V1/T1 = P2 V2/T2

1.02atm x 2,20L = 078atm x V2

330K 380K

2.244/ 330=.0068?

I'm lost.

T1 = 330

T2 = 380

1.02 * 2.2 / 330 = .789 * V2 /380

V2 = (1.02/.789)(380/330)(2.2)

= 3.28 L

note

expands as pressure goes down and expands as temperature goes up

so you can check if you have those ratios right.

Thanks!

You are welcome.