Lab: Calorimetry and Specific Heat Answers

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Answers:
, and the beaker was used to:thermometer
Selection 2:calorimeter.
6

You computed the specific heat for each of the four metals using the formula below: Check all items that you used, either directly or indirectly, each time you did this computation.

A
the first law of thermodynamics (heat lost by a metal equals the heat gained by the water)
B
the ability of heat to flow from a hot object to a cooler one
C
masses for the metal and the water in the calorimeter
D
temperature changes for the water and the metal
E
the known specific heat of the water
7

Select question 817f3cec

A
aluminum
B
copper
C
iron
D
lead
9

A student who did the same experiment that you did determined the specific heat for all of the metals. His values were all 0.10 to 0.20 less than the actual specific heat values. Select all possible sources of this error listed below.

A
The metals were not heated to 100°C.
B
The metals were heated beyond 100°C.
C
The metals cooled before they were added to the water.
D
The thermometer was not completely submerged in the water while reading.
E
The calorimeter was not sealed properly, so heat escaped.
F
Less metal was added to the calorimeter than was massed.
11

Now you need to put handles on your cookware! You have five different options, including metals and nonmetals such as wood. Based on specific heat, which material would be the best choice?

A
the material with the smallest specific heat
B
the material with the greatest specific heat
C
the material whose specific heat is farthest from the specific heat of the metal pan
D
the material whose specific heat is closest to the specific heat of the metal pan
12

▪ First, you measured the ✔ massweightdensityvolume of the metal and the water inside the calorimeter.

Answers:
of the metal and the water inside the calorimeter.:mass
the metal and added it to water in the calorimeter.:heated
of both materials.:temperature change
13

You computed the specific heat for each of the four metals using the formula below: Check all items that you used, either directly or indirectly, each time you did this computation.

Question illustration
A
the first law of thermodynamics (heat lost by a metal equals the heat gained by the water)
B
the ability of heat to flow from a hot object to a cooler one
C
masses for the metal and the water in the calorimeter
D
temperature changes for the water and the metal
E
the known specific heat of the water
16

Why did you use two coffee cups during the experiment instead of just one cup?

A
in case a hole was punctured in the inside cup
B
to add more weight in order to stabilize the calorimeter
C
to hold all of the water in the experiment
D
so that the water temperature would not change at all during the experiment
E
to prevent heat from escaping from the calorimeter
17

A student who did the same experiment that you did determined the specific heat for all of the metals. His values were all 0.10 to 0.20 less than the actual specific heat values. Select all possible sources of this error listed below.

A
The metals were not heated to 100°C.
B
The metals were heated beyond 100°C.
C
The metals cooled before they were added to the water.
D
The thermometer was not completely submerged in the water while reading.
E
The calorimeter was not sealed properly, so heat escaped.
F
Less metal was added to the calorimeter than was massed.
18

Based on the table above, olive✔ sesamevegetablesoybeancorn oil would transfer heat the best because its specific heat is

Answers:
oil would transfer heat the best because its specific heat is:sesame
Selection 2:lowest.
19

Now you need to put handles on your cookware! You have five different options, including metals and nonmetals such as wood. Based on specific heat, which material would be the best choice?

A
the material with the smallest specific heat
B
the material with the greatest specific heat
C
the material whose specific heat is farthest from the specific heat of the metal pan
D
the material whose specific heat is closest to the specific heat of the metal pan
20

However, compared to the other options, lead is too

A
expensive.
B
dangerous.
C
heavy.
D
dangerous and heavy.

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