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Topic 1 – Matter and Energy
21. Continues
8. 900 Joules of heat energy was added to a sample of ice to melt it at its freezing. What is the mass of
the water? 2) .37 g 3) 30060 g 4) 900 g
1) 2.7 g
9. The heat of fusion of a solid is 15 KJ/g. If a sample of this substance released 45 KJ of heat to freeze
at its freezing point, what is the mass of the substance?
1) 3 g 2) .33 g 3) 675 g 4) 60 g
10. If a 25 grams sample of a solid requires 12000 Joules of heat to completely change to a liquid at its
melting point, what is the heat of fusion of this substance?
1) 12000 J/g 2) 334 J/g 3) 480 J/g 4) 36 J/g
11. What is the heat of vaporization of an unknown liquid if 5 grams of this liquid requires
22 KJ of heat to change to vapor at its boiling point?
1) 4.4 J/g 2) 100 J/g 3) 4400 J/g 4) 11300 J/g
22. Heat calculations: Calculation of heat from lab data
1. In an experiment using a calorimeter, the following data were obtained:
Mass of calorimeter + water 150 g
Mass of calorimeter 100 g
o
Initial temperature of water 35 C
o
Final temperature of water 65 C
What is the total number of joules of heat energy absorbed by the water? 4) 18900
2) 6300
1) 4500
3) 12600
2. A student collected the following data from a calorimeter laboratory experiment:
Mass of calorimeter + water 72.5g
Mass of calorimeter 40.5 g
o
Final temperature of water 22 C
o
Initial temperature of water 30 C
Based on the data collected by the student, how much heat is released by the water in the calorimeter?
1) 2436 J 2) 1361 J 3) 960 J 4) 1070 J
3. The following information was collected by a student from a calorimetric experiment.
Mass of calorimeter + water 48.0 g
Mass of calorimeter 37.0 g
o
Initial temperature of water 60.0 C
Final temperature of water ?
If the student determined that the water in the calorimeter had absorbed 299 Joules of heat,
what would be the final temperature of the water?
o
o
o
o
1) 6.5 C 2) 66.5 C 3) 53.5 C 4) 360 C
Copyright©2010 E3 Scholastic Publishing. All Rights Reserved. SurvivingChem.com 135
Topic 1 – Matter and Energy
21. Continues
8. 900 Joules of heat energy was added to a sample of ice to melt it at its freezing. What is the mass of
the water? 2) .37 g 3) 30060 g 4) 900 g
1) 2.7 g
9. The heat of fusion of a solid is 15 KJ/g. If a sample of this substance released 45 KJ of heat to freeze
at its freezing point, what is the mass of the substance?
1) 3 g 2) .33 g 3) 675 g 4) 60 g
10. If a 25 grams sample of a solid requires 12000 Joules of heat to completely change to a liquid at its
melting point, what is the heat of fusion of this substance?
1) 12000 J/g 2) 334 J/g 3) 480 J/g 4) 36 J/g
11. What is the heat of vaporization of an unknown liquid if 5 grams of this liquid requires
22 KJ of heat to change to vapor at its boiling point?
1) 4.4 J/g 2) 100 J/g 3) 4400 J/g 4) 11300 J/g
22. Heat calculations: Calculation of heat from lab data
1. In an experiment using a calorimeter, the following data were obtained:
Mass of calorimeter + water 150 g
Mass of calorimeter 100 g
o
Initial temperature of water 35 C
o
Final temperature of water 65 C
What is the total number of joules of heat energy absorbed by the water? 4) 18900
2) 6300
1) 4500
3) 12600
2. A student collected the following data from a calorimeter laboratory experiment:
Mass of calorimeter + water 72.5g
Mass of calorimeter 40.5 g
o
Final temperature of water 22 C
o
Initial temperature of water 30 C
Based on the data collected by the student, how much heat is released by the water in the calorimeter?
1) 2436 J 2) 1361 J 3) 960 J 4) 1070 J
3. The following information was collected by a student from a calorimetric experiment.
Mass of calorimeter + water 48.0 g
Mass of calorimeter 37.0 g
o
Initial temperature of water 60.0 C
Final temperature of water ?
If the student determined that the water in the calorimeter had absorbed 299 Joules of heat,
what would be the final temperature of the water?
o
o
o
o
1) 6.5 C 2) 66.5 C 3) 53.5 C 4) 360 C
Copyright©2010 E3 Scholastic Publishing. All Rights Reserved. SurvivingChem.com 135
