Question

How much energy is needed to hear and melt 3.0 kg of copper initially at 83C

Answer 1

C=celsius
the melting point of copper is 1084 Celsius & it has a specific heat of 387j/kg*C ,so :

Q=mcΔT

=(3.0kg)(387J/kg C)1084 C-84C)

=1.1*10∧6J

hope it helps