Question

d. All 16. A copper rod of 0.4 kg at 150°C is dropped into 0.8 kg of water at 20°C. The final temperature is 40°C. What is the specific heat of copper rod? a. 1565 J/kg°C c. 1527.7 J/kg°C b. d. 1500 J/kg°C 700 J/kg°C​

Answer 1

1521.4545 J/kg⁰C

Step-by-step explanation:

The heat capacity of water is 4184 j/kg⁰C

Heat transferred(Q)=mass(m)*specific heat capacity(c)*temperature change(ΔT)

Q=mcΔT

Heat lost my copper is Q₁=0.4×c×110=44c

Heat gained by water is Q₂=0.8×4184×20=66944J

Let us assume there is no heat loss in the container.

Hence we have Q₁=Q₂

44c=66944

c=66944/44=1521.4545 J/kg⁰C

Hence the specific heat of copper rod is 1521.4545 J/kg⁰C