A 9.75kg block of metal requires 6.14 x 10^2 kJ of heat to change from a solid to a liquid at its melting poin

Question

from a solid to a liquid at its melting point. what is the metal?

A. Gold
B. Iron
C. Lead
D. Silver
heat of fusion , heat of vaporization
gold ~ 6.30 x 10^4 , 1.64 x 10^6
iron ~ 2.66 x 10^5 , 6.29 x 10^6
lead ~ 2.04 x 10^4 , 8.64 x 10^5
silver ~ 1.04 x 10^5 , 2.36 x 10^6

Answer 1

Assuming the heat of fusion is given in J rather than kJ, it's A. Gold.

(Otherwise, the numbers would be wrong.)

Answer 2

6.14kJ/9.75kg = 62.97 kJ/kg = 6.297*10^4 J/kg