181. A student living in a 4 m x 6 m x 6 m dormitory room turns on her 150 watts fan before she

leaves the room on a summer day, hoping that the room will be cooler when she comes back in

the evening. Assuming all the doors and windows are tightly closed and disregarding any heat

transfer through the walls and the windows, determine the temperature in the room when she

comes back 10 hours later. Use specific heat values at room temperature, and assume the room

to be at 100 kPa and 15°C in the morning when she leaves.

A. 28.13°C B. 38.13°C

C. 48.13°C D. 58.13°C