1. The problem statement, all variables and given/known data An audience of 1800 fills a concert hall of volume 2.2×104 m^3. If there were no ventilation, by how much would the temperature of the air rise over a period of 2.0 h due to the metabolism of the people (70W/person)? Assume the room is initially at 293K. 2. Relevant equations 3. The attempt at a solution I have no idea how to start this problem without using the convection equation... can someone at least give me a hint on how to start this problem? this is so confusing... thanks.