please help

1.1. An old man living in a 4m5m5m room forgets to turn off a 100W fan before he leaves the room which is at 100kPa,30C. Will the room be cooler when he comes back after 5 hours assuming zero heat transfer? The heat capacity at constant volume for air is 30 kJ/kgmol. 1.2. A large high-pressure tank contains 10kg of steam. In spite of the insulation on the tank it loses 2050kJ/hr to the surroundings. How many kW are needed to maintain the steam at 3000kPa and 600K ? (5) 1.3. An expensive drug is manufactured in a sealed vessel that holds 8lb of water at 100F. A 1/4hp motor stirs the contents of the vessel. What is the rate of heat removal from the vessel in Btu/min to maintain the temperature at 100F