miadnooner03 miadnooner03
  • 07-05-2022
  • Physics
contestada

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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hinnocentholumede
hinnocentholumede hinnocentholumede
  • 11-05-2022

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

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