Calculate the energy value (kcal/g) if the temperature of 380 g of water increased from 25.0 °C to 40.1 °C when 0.80 g of butter was burned in a calorimeter.  

• A. 3.8 kcal/g
• B. 5.7 kcal/g
• C. 7.2 kcal/g
• D. 8.5 kcal/g

Answer: (C)