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?

Use the combined gas law, P₁V₁/T₁ = P₂V₂/T₂, and solve for the final pressure: P₂ = (1.1 atm × 2.5 L × 367 K) / (298 K × 3.9 L) ≈ 0.87 atm. The final pressure is 0.87 atm, choice B.

AI-written and checked against the verified answer.