Allrighty, I can't figure out the following questions from my Chapter Review, and I can't find any similar problems in the book or workbook. Q. A volume of air has a temperature of 0 degrees C. An equal volume of air that is twice as hot has a temperature of: a)0 degrees C, b) 273 degrees C, c) 2 degrees C, d) 100 degrees C, or e) none of these. I thought it would be 2 degrees C, but the answer supposedly is (b) 273 degrees C. Now, how did they get that? I tried to convert 64 degrees F back into C, but the answer wasn't one of the choices. Then I thought perhaps it has something to do with Kelvins. Isn't 273 degrees C the same as 1 Kelvin? And so it would be twice that, right? Also not one of the choices. 273 degrees sure sounds like alot of hot air to me. This is also a puzzler: Q. If you run a refrigerator in a closed room with the fridge door open, the room temp will a) increase, b) decrease, c) remain the same. I think it would cool the whole room, because lots of cold air comes out whenever my son hangs the door open for a half-hour pawing through the contents and drinking from the milk carton. Posting homework questions at 11:30 pm on a Friday night, how pathetic. And I'm knee-deep in sugar, making Panorama Eggs for the poor for Easter. So please help my sticky situation. I can hardly concentrate on physics with my kitchen strewn full of sugar. Thanking you in advance.