Answered: TABLE 19.1 Specific Heats of Some…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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An aluminum calorimeter with a mass of 100 g contains 250 g of water. The calorimeter and water are in thermal equilibrium at 10.0°C. Two metallic blocks are placed into the water. One is a 50.0-g piece of copper at 80.0°C. The other has a mass of 70.0 g and is originally at a temperature of 100°C. The entire system stabilizes at a final temperature of 20.0°C. (a) Determine the specific heat of the unknown sample. (b) Using the data as shown, can you make a positive identification of the unknown material? Can you identify a possible material? (c) Explain your answers for part (b).

TABLE 19.1 Specific Heats of Some Substances at 25°C
and Atmospheric Pressure
Specific Heat
(J/kg - °C)
Specific Heat
(J/kg . °C)
Substance
Substance
Elemental solids
Other solids
Aluminum
900
Brass
380
1 830
837
Beryllium
Cadmium
Сopper
Glass
230
387
Ice (-5°C)
Marble
2 090
860
Germanium
322
Wood
1 700
Gold
129
Liquids
Alcohol (ethyl)
Mercury
Water (15°C)
Iron
448
2 400
128
703
Lead
140
Silicon
4 186
Silver
234
Gas
Steam (100°C)
2 010
Note: To convert values to units of cal/g. °C, divide by 4 186.

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