Energy and Specific Heat

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Specific Heat of an Unknown Metal

Identification number of unknown metal

4

Mass of unknown metal (g)

18.07

Mass of calorimeter cup (g)

1.79

Masses and Temperatures for Two Trials

	Trial 1	Trial 2
Mass of calorimeter and water (g)	47.26	47.90
Temperature of boiling water bath (°C)	100.45	100.35
Initial temperature of calorimeter water (°C)	22.37	23.32
Final temperature of water and metal (°C)	25.64	26.50

Determining Calories per Mass of Food

Food being analyzed

Doritos

Mass of can (g)

12.65

Mass of can and water (g)

103.15

Initial mass of food sample (g)

1.86

Initial temperature of water (°C)

22.61

Final mass of food sample (g)

0.51

Final temperature of water (°C)

24.82

(16pts) Identity of Metal from Specific Heat

Table view

List view

Computation of Specific Heat for Unknown Metal

	Trial 1	Trial 2
Mass of unknown metal (g)	18.07	18.07
Mass of calorimeter cup (g)	1.79	1.79
Mass of calorimeter and water (g)	47.26	47.90
Temperature of boiling water bath (°C)	100.45	100.35
Initial temperature of calorimeter water (°C)	22.37	23.32
Final temperature of water and metal (°C)	25.64	26.50
Mass of water (g)
Temperature change of water (°C). Do not include a negative sign.
Heat gained by water (cal). Do not include a negative sign.
Heat lost by metal (cal). Do not include a negative sign.
Temperature change of metal (°C). Do not include a negative sign.
Specific heat of metal [cal/(g °C)]
Specific heat of metal [J/(g °C)]

(2pts)

Identify the Metal

Choose...AluminumCopperLeadIron

Computation of Calories per Mass of Food

Calories per gram of food (kcal/g)
Mass of can (g)	12.65
Mass of can and water (g)	103.15
Initial mass of food sample (g)	1.86
Final mass of food sample (g)	0.51
Initial temperature of water (°C)	22.61
Final temperature of water (°C)	24.82
Mass of water (g)
Temperature change of water (°C). Do not include a negative sign.
Heat gained by water (cal). Do not include a negative sign.
Heat gained by water (kcal). Do not include a negative sign.
Heat lost by food (cal). Do not include a negative sign.
Heat lost by food (kcal). Do not include a negative sign.
Mass of food burned (g)