Thermodynamics Practice Problems
Solve the following problems using the formula for calorimetry.
1
1 point
What is the number of joules needed to raise the temperature of 150 grams of water by 25oC?
14.5 J
20,983 J
15,675 J
0.006 J
2
1 point
What mass of water can be heated from 45oC to 70oC by the addition of 875 Joules?
40.7 g
0.88 g
8.4 g
12.7 g
3
1 point
Calculate the change in temperature of 26.0g of an unknown liquid that has a specific heat of 3.4J/gC when a 7.8g piece of
Aluminum with a specific heat of 0.90J/gC decreases temperature from 210oC to 170oC.
70.8
3.17
0.006
14.6
4
1 point
What mass of water at 80oC is needed to change the temperature of a 12.5g piece of silver with a specific heat of 0.24J/gC
from 10oC to 40oC.
Final temperature is the same for both substances (40C).
Specific heat of water is 4.18 J/gC.
33 g
0.5 g
11.2 g
0.0014 g
5
1 point
Calculate the amount of heat lost by 15.0 grams of water if the temperature change dropped from 40oC to 10oC.
6
1 point
Calculate the specific heat of a 25.6g piece of metal at 220oC that raises the temperature of 200.0g of water from 25oC to
50oC.
Specific heat of water is 4.18 J/gC
Final temperature is 50C.