Applied Physics (11th Edition)
11th Edition
ISBN: 9780134159386
Author: Dale Ewen, Neill Schurter, Erik Gundersen
Publisher: PEARSON
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Textbook Question
Chapter 14.5, Problem 10P
The following data were collected in the laboratory to determine the specific heat of an unknown metal:
| Mass of aluminum calorimeter | 132 g |
| Specific heat of calorimeter | 920– J/kg°C |
| Mass of water | 285 g |
| Specific heat of water | 4190 J/kg °C |
| Mass of metal | 215 g |
| Initial temperature of water and calorimeter | 12.6°C |
| Initial temperature of metal | 99.1°C |
| Final temperature of calorimeter, water, and metal | 18.6°C |
Find the specific heat of the unknown metal.
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Students have asked these similar questions
A student obtains the following data in a calorimetry experiment designed to measure the specific heat of aluminum.
Initial temperature of water and calorimeter
70.3°C
Mass of water
0.403 kg
Mass of calorimeter
0.04 kg
Specific heat of calorimeter
0.61 kJ/kg·°C
Initial temperature of aluminum
26.9°C
Mass of aluminum
0.196 kg
Final temperature of mixture
66.4°C
Measurement of specific heat of metals
Aluminum
Cupper
Mass of inner cup of calorimeter mcal, g
50
50
Specific heat of calorimeter Ccal, cal/(g °C)
Specific heat of water Cw, cal/(g °C)
0.217
0.217
1.00
1.00
Mass of metal Mm, g
80
140
Mass of inner cup + water mcal + Mw, g
220
240
Mass of water Mw, g
170
190
Initial temperature of calorimeter and water to, °C
Initial temperature of metal tm, °C
22
22
100
100
Final equilibrium temperature tr, °C
30
26
Thermal energy gain by calorimeter and water Qgain, cal
Specific heat of metal Cm, cal/(g °C)
Standard specific heat of metal Cst , cal/(g °C)
0.217
0.093
|% error
Thermal energy lost = Thermal energy gained
Thermal energy Q = cmAt
%3D
%3D
Specific heat C
|Thermal energy lost by metal = Thermal energy gained by (water + calorimeter)
%3D
EmMm(tm-tf)=(ccatMeat +CwMw)(tp- to)
%3D
(Ccaimcal+ Cymw)(tf- to).
Gm =
%3D
Mm(tm - t;)
|
A 200 gram copper calorimeter contains 400 g of water at 25 °C. A metal specimen weighing 250 g is heated to a certain temperature and then plunged into the calorimeter. The final temperature of the mixture is 42 °C. If then specific heat of the metal specimen is 0.09 cal/(g-°C), find the initial temperature of the specimen just before it was plunged into the calorimeter
Chapter 14 Solutions
Applied Physics (11th Edition)
Ch. 14.1 - Find each temperature as indicated. 1. TF=77F,...Ch. 14.1 - Find each temperature as indicated. 2. TF=113F,...Ch. 14.1 - Find each temperature as indicated. 3. TF=257F,...Ch. 14.1 - Find each temperature as indicated. 4. TC=15C,...Ch. 14.1 - Find each temperature as indicated. 5. TC=145C,...Ch. 14.1 - Find each temperature as indicated. 6. TC=35C,...Ch. 14.1 - Prob. 7PCh. 14.1 - Prob. 8PCh. 14.1 - Find each temperature as indicated. 9. TC=95C,...Ch. 14.1 - Prob. 10P
Ch. 14.1 - Prob. 11PCh. 14.1 - Prob. 12PCh. 14.1 - Prob. 13PCh. 14.1 - Prob. 14PCh. 14.1 - Prob. 15PCh. 14.1 - Prob. 16PCh. 14.1 - Prob. 17PCh. 14.1 - The melting point of pure iron is 1505C. What...Ch. 14.1 - The melting point of mercury is -38.0F. What...Ch. 14.1 - A welding white heat is approximately 1400C. Find...Ch. 14.1 - The temperature in a crowded room is 85F. What is...Ch. 14.1 - The temperature of an iced tea drink is 5C. What...Ch. 14.1 - Prob. 23PCh. 14.1 - The melting point of ethyl alcohol is -179F. 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