Answered: How many kilocalories per gram are…

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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The number of kilocalories in food is determined by calorimetry techniques in which the food is burned and the amount of heat transfer is measured. Chart attached.

How many kilocalories per gram are there in a 5.25-g peanut if the energy from burning it is transferred to 0.515 kg of water held in a 0.095-kg aluminum cup, causing a 54.9°C temperature increase?

Substances
Solids
Aluminum
Specific heat (c)
J/kg C
900
kcal/kg.C
0.215
Concrete
840
0.20
Сopper
Glass
387
0.0924
840
3500
452
0.20
Human Body (37°C)
0.83
Iron, steel
0.108
Liquids
Water
4186
1.000
Mercury
139
0.0333

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