Posted by Tim on Sunday, April 6, 2008 at 9:01am.
A 10 kg block of ice has a temperature of 13°C. The pressure is one atmosphere. The block absorbs 4.10 106 J of heat. What is the final temperature of the liquid water?

Physics  Damon, Sunday, April 6, 2008 at 11:00am
Lets do it for one kg and say it absorbs 4.1 * 10^5 Joules to make the numbers easier.
first raise temp of ice from 13 to 0
Joules = 2000 * 13 = 26,000 = .26*10^5
so we have 4.1  .26 = 3.84*10^5 Joules left and 1 kg ice at zero C
Now melt the ice
Joules = 3.34 10^5 Joules/kg heat of fusion
so we have (3.84 3.34) = .5*10^5 Joules left and water at zero deg C
now heat the water
Joules = 5*10^4 = .4190*10^4 * (T0)
T = 11.9 deg C

Physics  bobpursley, Sunday, April 6, 2008 at 11:01am
How much heat is required to bring the block of ice up to 0C?
How much heat is required to melt the ice at 0C?
If there is heat left over, then final temp can be calculated by
Heatleftover=10kg*specificheatwater(Tf0)
solve for Tf.
The statement "the block absorbs 4.10106 J of heat" makes no sense to me.

Physics  Anonymous, Monday, September 16, 2013 at 1:00pm
calories given off when 87g {\rm g} of water cools from 47 ∘ C ^\circ C to 24 ∘ C
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