Chapter 2, Problem 2.51P

A glass is cleaned in hot water at 35°C and placed on the table bottom up. The room air at $\text{2}0°\text{C}$ that was trapped in the glass is heated up to $\text{4}0°\text{C}$ and some of it leaks out, so the net resulting pressure inside is $\text{2 kPa}$ above the ambient pressure of $\text{1}0\text{1 kPa}$ . Now the glass and the air inside cool down to $\text{2}0°\text{C}$ . Find the final gage pressure inside the glass.