Problem 4 It's a hot summer day on campus and your room is really hot. You try to open the windows but they are sealed shut. To help cool the room, you decide that you will turn on a fan which requires 50.W of power. Although you close the blinds in your room, it's a sunny day so additional heat into your room is 5.5 W. You look at the initial temperature of the room and it's 30.C. Your room is 10 ft by 12 ft with 9.0 ft ceilings. You decide to head out to Ford Hall to enjoy the air conditioning and you seal the door to your room as you head out, leaving the fan on. You return after 3 hrs to your room. You can assume atmospheric pressure (1 atm), and assume that heat loss from the room is negligible. Some important information for air: MW= 29 g/mol, c =0.718 J/(gC) A) What is the mass of air in your room in kg? B) What temperature is your room when you return after 3 hours?