250g of lead at 170oC is dropped into 100g of water at 0oC. If the final temperature is 12oC, the specific heat of lead is (specific heat of water is 4,200J/kgoC)
A
39.5J/kgoC
B
50.4J/kgoC
C
127.6J/kgoC
D
154.6J/kgoC
E
173.4J/kgoC
Verified Correct Answer: C.
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #28909)