Posted by Katy on Tuesday, October 12, 2010 at 11:10am.
The latent heat of vaporization of water is 540 calories/gram. How many calories are required to completely vaporize 500 grams of water?

IPC  MathMate, Tuesday, October 12, 2010 at 11:19am
1 g = 540 calories
500 g = ? calories
Since the mass is 500 times 1 g, so the number of calories
= 500*540 calories

IPC  Katy, Tuesday, October 12, 2010 at 11:21am
Oh, so you just set it up like a proportion?
And thank you. (:
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