Air expands from 2 m3 to 3 m3 at constant pressure. If the initial temperature is 60 degrees Celsius, what is the final temperature?

P V = n R T

p, n and R constant so

V1/T1 = V2/T2

T1 = 60 + 273 = 333 deg Kelvin

2 / 333 = 3 / T2

T2 = 999/2 = 500 K
500-273 = 227 deg C