Question

The heat capacity of a bomb calorimeter was determined by burning 6.79 g of methane (energy of combustion = -802 kJ/mol CH4) in the bomb. The temperature changed by 15.7°C. (a) What is the heat capacity of the bomb?

Answer 1

Answer:

The answer to your question is: Cp = 7.52 kJ/g°C

Explanation:

Data

Cp = ?

mass = 6.79 g

Energy = -802 kJ/mol   CH₄

ΔT = 15.7°C

Formula

Q = mCpΔT

Solve for Cp

$Cp = \frac{Q}{mΔT}$

Process

- Convert energy to J

                                     -802kJ/mol = - 802 000 J/mol

- Calculate heat capacity

                          $Cp = \frac{802 000}{(6.79)(15.7)}$

                                 Cp = 7523 J/ g°C   or

                                 Cp = 7.52 kJ/g°C