1. Bomb Calorimeter Thermometer Electrical Leads E = q + w
Motorized Stirrer
O2 Source
Bomb Calorimeter doesn’t permit the burning sample to expand (the “bomb” is very strong).
No expansion, ...
No V...
Insulated Jacket
Igniter wire
No work done.
Bomb
E = q
Food
Heat collected is equal to the actual amount of energy available from the food material.

2. Bomb Calorimeter (Problem 6.45)
A chemical engineer studying the properties of fuels placed g of a hydrocarbon in the bomb of a calorimeter and filled it with O2 gas.
The bomb was immersed in L of water and the reaction initiated. The water temperature rose from 20.00C to C.
If the calorimeter (excluding the water) has a heat capacity of 403 J/ C, what was the heat of combustion per gram of the fuel?

3. Bomb Calorimeter (Problem 6.45)
Heat Lost
Heat gained
(water)
(hydrocarbon)
q = m  c  T J
q = g  4.184J/gC  3.55C J J
q = J
What was the heat of combustion per gram of the fuel?
Heat gained
(calorimeter)
q = Ccalorimeter  T J
1.500 gfuel =
q = J/C  C
J/g
q = J