Question

Complete combustion of a 0.350 g sample of a compound in a bomb calorimeter releases 14.0 kJ of heat. The bomb calorimeter has a mass of 1.20 kg and a specific heat of 3.55 J/(gi°C).

If the initial temperature of the calorimeter is 22.5°C, what is its final temperature?
Use q equals m C subscript p Delta T..
19.2°C
25.8°C
34.2°C
72.3°C

Answer 1

q = m c ΔT so ΔT = q / (m c) = 14,000 J / (1200 g × 3.55 J·g⁻¹·°C⁻¹) = 14,000 / 4,260 ≈ 3.29°C.
Tfinal = 22.5°C + 3.29°C ≈ 25.8°C.

Answer: 25.8°C.