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Worksheet “Heat and Temperature”
1)
How much energy would be needed to heat 450 g of copper metal
from 25.0 ºC to 75.0 ºC? The specific heat of copper at 25.0 ºC is
0.385 J/g ºC.
2)
The specific heat of iron is 0.454 J/g ºC. How much heat is needed
to raise the temperature of 20 g of iron by 50. ºC?
3)
If the specific heat of aluminum is 0.874 J/g ºC, how much heat is
given off when 10 g of aluminum is cooled from 50. ºC to 10. ºC?
4)
How much energy needs to be added to 100. g of water to raise its
temperature from 40. ºC to 60. ºC?
5)
If 2.34 g of a substance at 22 ºC with a specific heat of 0.93 J/g ºC is
heated with 29.65 J of energy, what is the new temperature of the
substance?
6)
How much heat is needed to change 2.0 kg of ice at 0°C to liquid
water at 0°C?
7)
How much heat is needed to change 0.50 kg of liquid water at 100°C
to steam at 100°C?
8)
How much heat does a refrigerator need to remove from 1.5 kg of
water at 20.0 °C to make ice at 0°C?
9)
A 1.0 kg aluminum block has an initial temperature of 10.0°C. What
will the final temperature of the aluminum block be if 3.0 x 104 J of
heat is added? The specific heat of aluminum is 0.90 J/g ºC.
10)
What is the specific heat of a 36.359 g-sample of an unknown
material when 59.912 J of heat are applied and raise the
temperature by 152.0°C?
11)
What would be the final temperature of a 73.2 g sample of cobalt
with an initial temperature of 102.0°C, after it loses 6800 J? The
specific heat of cobalt is 0.4210 J/g °C.