A gas is heated from 298 K to 367 K while its volume changes from 2.5 L to 3.9 L. If the initial pressure of the gas is 1.1 atm, what is the final pressure of the gas?

Answer 1

P V = n R T
n and R are constant here.
So
P2 V2 / T2 = P1 V1 / T1
P2 * 3.9 / 367 = 1.1 * 2.5 / 298
P2 = 1.1 * 367/298 * 2.5/3.9
0.868 atm