What is the temperature in Celsius A copper block is removed

What is the temperature in Celsius A copper block is removed from a 350 degree C oven and dropped into 1.0 kg of water originally at 20 degrees C. When the temperature becomes stable it is 26 degrees C What is the mass of the copper block? (the specific heat of copper is 385 J/kg(C) the specific heat of water is 4192 J/Kg(C))

Solution

3.

Heat gained by water =Heat lost of copper

M_waterC_water(T-T₁) =M_copper*C_coppwe*(T₂-T)

1*4192*(26-20) =M_copper*385*(350-26)

M_Copper=0.2016 kg