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Calculating Heat Worksheet
Substance
Water
Grain Alcohol
Ice
Wood
Steam
CWorofonn
Aluminum
Iron
Silver
Men:un·
G-Old
Specific Heat (.J/2°C)
4.18
2.40
2.10
1.80
1.70
1) A 122.0 gram sample of
water is raised 65.4°C.
How much heat was added
to the system?
0.96
o.90
0.46
0.24
0.14
0.128
2) 916 J of energy are removed from a sample of iron. If it cools from
60.0°( to 12.8°(1 what is the mass of the sample of iron?
3) A 181 gram sample of metal cools 82.0°c. If 13,360 J of energy are
released, what type of metal is it?
4) A sample of silver releases 45.6 kJ of energy. If the sample has a mass
of 421 240 grams, what was the drop in temperature?
5) What is the specific heat of a substance if 476 J of energy are released
lowering a 283 gram sample 12.0°C? Which substance is it?
6) 472 J of energy are absorbed by wood raising the temperature 18.2°C.
What is the mass of the sample?
7) Ice absorbs 8.2 kJ of energy. If the sample is 72.2 g and the original
temperature is -121°(, what is the new temperature?
8) A 1.902 kg sample of grain alcohol absorbs a large amount of heat
which raises the temperature from 20.5°( to 77.0°c. How much heat
was absorbed?
9) A sample of steam absorbs 883 kJ of energy and increases its
temperature from 112°C to 235°c. What is the mass of the sample of
steam?
10) A 180.0 g sample of chloroform sits on a shelf. If the temperature in
the room is raised from 17.0°c to 33.2°c, how much heat did the
chloroform absorb?
11) A 422 g sample releases 162.6 kJ of energy and drops 92.2°c. What is
the specific heat of the substance? And what is the substance?
12) A 17.0 g sample of iron absorbs 330.0 J of energy. If the original
temperature was 18.0°c, what is the new temperature?
13) A 2.88 kg sample of ice gains 3024 J of energy. If the original
temperature is -o.5°C, what is the new temperature?
Heat Lost
Heat Gained
14) A metal shard with a mass of 23.0 g is heated to a temperature of
162.9°C. It is dropped into 50. g of water. The water was originally
55°C and it heats to 64.7°C. What is the specific heat of the metal and
what is the identity of the metal?
15) A silver bracelet is stored in a deep freeze. The 152 g silver bracelet is
placed in a 232 g container of grain alcohol. The silver raises from
-100°c to 13°C. Determine the starting temperature of the alcohol.
16) A sample of iron starts at 153°C and cools to 30. °C when dropped in
an 810. g container of grain alcohol. The alcohol was originally 3.1°c.
What is the mass of the sample of iron?
17) A 128 g gold necklace is dropped into a 422 g vat of mercury. The
mercury cools from 99°( to 84°C. What was the original temperature
of the gold necklace?
18) A 483 g wood dowel rod is dropped into 1.0 liter of water (1 kg). The
temperature of the dowel rod was increased 22°c. The water sample
0
was originally 60. c. What is the new temperature of the water?
19) A gallon of water (3.79 kg) is dumped in 42.3209 kg of chemical X.
The water cools from 90°C to 3.0°C. Chemical X was originally at
-31.0°(. Calculate the specific heat of chemical X and determine what
substance it is.
20) A sample of iron is dropped into 6045 g of chloroform. The
chloroform's temperature is raised from 15°( to 57.2°c. If the
temperature of the iron block was 81.2°c, determine the mass of the
iron in kilograms.