A 50.0g sample of an unknown metal is heated to 100.0∘C and then quickly transferred to 60.0g of water at 25.0∘C in an insulated calorimeter. The final equilibrium temperature is 30.0∘C. Assuming the heat capacity of the calorimeter itself is negligible and that the specific heat capacity of water is 4.18Jg−1∘C−1, what is the specific heat capacity of the metal?
a) 0.66Jg−1∘C−1
b) 1.20Jg−1∘C−1
c) 0.36Jg−1∘C−1
d) 0.25Jg−1∘C−1