1. Specific Heat vs. Heat capacity
Specific heat units: or
This is  oC
Since it is a  , Celsius or Kelvin are interchangeable.

2. Specific Heat vs. Heat capacity
Specific heat units: or
Heat Capacity units:

3. It took 74. 9 J of heat to raise the temperature of 10
It took 74.9 J of heat to raise the temperature of g of a substance 8.50oC. Determine the specific heat of the substance.
Hint: focus on the
desired units.

4. It took 74. 9 J of heat to raise the temperature of a 10
It took 74.9 J of heat to raise the temperature of a 10.0 g of a substance 8.50oC. Determine the specific heat of the substance.
74.9 J =
0.881
10.0 g
8.50 oC
The units match!

5. How many calories of heat are evolved if 44.7 g of Al
undergoes a cooling change of 15.0 oC?
(specific heat of Al = cal/g•K)
44.7 g
15.0 K
= cal
K vs. oC?
’s are the same!
WHY?