How much ice would have to melt to lower the temperature of 352 ml?

Question

How much ice (in grams) would have to melt to lower the temperature of 352 ml of water from 24 degrees celsius to 6 degrees celsius ? Assume the density of water is 1.0 g/ml

Answer 1

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First find how much heat is needed
352ml=352g of water
(352g)(4.18J/g c)(-18) = -26484.48 --> convert to kilojoules by dividing by 1000 = 26.48448kj

next use the heat of fusion of water (6.02kj/mol) to cancel out kilojoules

next use molar mass of water (18g/mol) to cancel out moles and you're left with g

your answer should be 79.19g