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Topic: Phase changes  (Read 1209 times)

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Offline jmacmartin

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Phase changes
« on: December 10, 2012, 10:11:46 PM »
How many grams of ice would need to melt to cool down 174g of liquid water from 30.5C to 4.0C?  (ΔHvap = 40.7 kj/mol, ΔHfus = 6.01 kj/mol, Cs solid = 2.10 J/gC, Cs liquid = 4.184, Cs gas = 1.89.

Any help would be very appreciated! :)
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Offline Borek

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Re: Phase changes
« Reply #1 on: December 11, 2012, 04:05:15 AM »
You have to show your attempts at solving the question to receive help. This is a forum policy, described in the forum rules.

Do you know any formulas for the heat balance?
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