# What quantity of heat energy is released when 335 g of liquid water freezes? Answer in units of kJ.?

Someone please help it is due in an hour

### 2 Answers

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- davidLv 74 weeks ago
Hi. Kayla

... you need a constant called the latent heat of fusion. I'm sure this is in your book somewhere .. If I remember it correctly it is 335 J/g

just multiply the mass in grams by this constant ..

Q = m X Lf = 335g X 335J/g = 112,225 J

convert to kJ ... divide by 1000 = 112.225 kJ <<< round for sig. figs

Q = 112kJ >>> answer

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