You Have a 25-G Sample of a Metal and You

Multiple Choice

You have a 25-g sample of a metal and you would like to identify it. You are certain that the metal is either copper (specific heat = 0.093 cal/gC) , lead (specific heat = 0.031 cal/gC) , or aluminum (specific heat = 0.22 cal/gC) . You run an experiment in which you find that the metal absorbs 6.2 calories of heat when it increases in temperature from 25C to 33C. Which metal is it?

A) copper
B) lead
C) iron
D) a mixture of copper and lead
E) It's not any of these metals.