Posted by Anonymous on Friday, December 31, 2010 at 12:02pm.
Let's see if you can do that in your head, knowing that 4.18 joules is 1 calorie. (a good number to remember)
80 joules is therefore very close to 20 calories.
Since the specific heat of water is 1.0 calories per degree-gram, 20 calories is enough to heat 2 grams 10 degrees C.
If you start at 15 C, and add 10, what do you end up with for the temperature?
c
C
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