At 10°c the gas in a cylinderhas a volume of 0.250 l. the gas is allowed to expand to 0.285 l. what must the final temperature be for the pressure to remain constant?

Using Charles' law (V1/T1 = V2/T2), we substitute values in where

T1=10

T2=?

V1=.250

V2=0.285

Just rearrange to solve for T2, and the answer is 11.4 C

Note the we do not have to convert the temperature into kelvins when using Charles' Law.