A 307-G Sample of an Unknown Mineral Was Heated to 98.7°C

Multiple Choice

A 307-g sample of an unknown mineral was heated to 98.7°C and placed into a calorimeter containing 72.4 g of water at 23.6°C. The heat capacity of the calorimeter was 15.7 J/°C. The final temperature in the calorimeter was 32.4°C. What is the specific heat capacity of the mineral?

A) 0.124 J/g·°C
B) 0.131 J/g·°C
C) 0.138 J/g·°C
D) 0.145 J/g·°C
E) None of these choices is correct.