Name: DOMAUB, Mohammad Moqsien B.
Subject & Section: PHY062.1-UV
Virtual Laboratory Experiment Video Link: https://youtu.be/AkF_DTVf2yc
SPECIFIC HEAT OF METALS
II.
PRESENTATION OF DATA
Metal Sample: __________________
Quantities
Units
Trial 1
Trial 2
Mass of Metal
kg
0.1kg
0.5kg
Mass of Calorimeter
kg
0.0394kg 0.0394kg
Mass of calorimeter and water
kg
0.0403kg 0.0403kg
Mass of water
kg
0.0523kg 0.0523kg
Specific heat of calorimeter
J/kgK 387
387
Initial temperature of the metal
K
98 k
98k
Initial temperature of the water and calorimeter
K
14 Celsius 12 Celsius
Final temperature of the system
K
18 Celsius 19 Celsius
Temperature change of the metal
K
80 Celsius 74 Celsius
Temperature change of calorimeter & water
K
4 Celsius 7 Celsius
Heat gained by the water
J
1676
1466.5
Heat gained by the calorimeter
J
154.8
135.45
Heat given up by the metal
J
1830.8
1601.95
Specific heat of the metal (experimental)
J/kgK 228.25
405.56
Specific heat of the metal (standard)
J/kgK 382
380
Percentage error
39%
6.72%
III.
COMPUTATIONS AND ANALYSIS
1. Why is the mass of the outer shell of the calorimeter and the resulting ring not included in data
for this experiment?
2.
How does the heat conductivity of the metal used in this experiment affect the accuracy
of the results?
3.
Why should the hot metal be dry before it is introduced into the cold water?
IV. CONCLUSION
The conclusion that the higher the coefficient of linear expansion, the more important the change
in length is owing to the direct percentage of the coefficient of linear expansion to modify the
size of an item.
V. PROBLEM SOLVING
1. 837 calories of heat are required to heat 100 grams of copper from 10 C to 100 C. What is
the specific heat of copper?
0
o
2.
The temperature of a silver bar rises by 10.0°C when it absorbs 1.23 kJ of energy by heat.
The mass of the bar is 525 g. Determine the specific heat of silver.
Because metal has a greater thermal expansion coefficient than glass, the metal expands
more than the glass, weakening the bond.