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2.63 kg of molten copper already at its melting point has 750 kJ removed from it. In degrees Celsius, what will be the final temperature of the copper?
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45 votes
2.63 kg of molten copper already at its melting point has 750 kJ removed from it.

In degrees Celsius, what will be the final temperature of the copper?

User Kingargyle
by
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1 Answer

4 votes
4 votes

Answer:

Q=mc(T-t)

Q=750kj=750000j

SHC OF CU is 400j/kg/k

m=2.63kg

750000=2.63×400×T

750000=1052T

divide both side by 1052

750000/1052=T

T =712.9

User Agomcas
by
3.0k points
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