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?

Respuesta :

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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