Question

An unknown substance weighing 0.545g is placed into a bomb calorimeter with a heat capacity of 6.75 kJ/°C. When the sample is burned completely, the temperature in the calorimeter rises from 23.3°C to 26.4°C.

Answer 1

heat generated by the reaction = 20.925 kJ

Step-by-step explanation:

Assuming that the we asked heat generated by the reaction.

`Q=C(T_2-T_1)`

C= heat capacity = 6.75 KJ/°C

C= Cp×m

T_2= 26.4°C and T_1= 23.3°C

`Q=6.75*(26.4-23.3)`

=20.925 kJ