1. The problem statement, all variables and given/known data The are temperature and pressure in a laboratory are 20 degree C and 1 atm. A 1L container is open to the air. The container is then sealed and placed in a bath of boiling water. After reaching thermal equilibrium, the container is opened. How many moles of air escaped? 2. Relevant equations 3. The attempt at a solution No attempt. PV=RT but I am not sure how to set up the equation.