Answer to Question #235580 in General Chemistry for carl

Question

When 1 mol of caffeine (C8H10N4O2) was burned in air, 4960 kJ of heat is evolved. Five grams of caffeine is burned in a bomb calorimeter. The temperature is observed to increase by 11.37C. What is the heat capacity of the calorimeter?

Answer 1

Molar mass of caffeine = 194.19

194.19 - 5 = 189.19

= 189.19 × 284.37/ 4960

= 10.85J/(kg·K)