40. Gloves are often worn to protect the hands from being burned when they come in contact with very hot or very cold objects. Gloves are often made of cotton or wool, but many of the newer heat-resistant gloves are made of silicon rubber. The spe- cific heats of these materials are listed below: Material Specific heat (J/g°C) wool felt 1.38 cotton 1.33 1.33 раper rubber 3.65 silicon rubber 1.46 ( If,a glove with a.mass ncreases in temperature by 15.3°F, how mch energy was absorbed by the glove? A glove with a mass of 86.2 grams increases in temperature by 25.9°F whet absorbs 1.71 kJ of erergy. Calculate the specific heat of the glove and predict its composition. (c) If a glove with a mass of 50.0 grams needs to absorb 1.65 kJ Zofrenergy, how much will the temperature of the glove increase for caeh of the materials listed above? (d) Which is the best material for a heat-resistant glove? (e) If you were designing a heat-resistant glove, what kind of specific heat would you look for? 99.3 grams omposed of cotten

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter12: Thermodynamic Processes And Thermochemistry
Section: Chapter Questions
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40. Gloves are often worn to protect the hands from being burned
when they come in contact with very hot or very cold objects.
Gloves are often made of cotton or wool, but many of the
newer heat-resistant gloves are made of silicon rubber. The spe-
cific heats of these materials are listed below:
Material
Specific heat (J/g°C)
wool felt
1.38
cotton
1.33
раper
1.33
rubber
3.65
silicon rubber
1.46
( If a glove with a.mass.of 99
ncreases in temperature by 15.3°F. how much energy was
absorbed by the glove?
A glove with a mass of 86.2 grams increases in temperature
by 25.9°F whenit absorbs 1.71 kJ of eiergy, Calculate the
spécific heat of the glove and predict its composition.
(c), If a glove with a mass of 50.0 grams needs to absorb 1.65 kJ
of energy, bow much will the_temperature of the glove
increase for cach of the materials listed above?
(d) Which is the best material for a heat-resistant glove?"
(e) If you were designing a heat-resistant glove, what kind of
specific heat would you look for?
grams composed of cotten
Transcribed Image Text:40. Gloves are often worn to protect the hands from being burned when they come in contact with very hot or very cold objects. Gloves are often made of cotton or wool, but many of the newer heat-resistant gloves are made of silicon rubber. The spe- cific heats of these materials are listed below: Material Specific heat (J/g°C) wool felt 1.38 cotton 1.33 раper 1.33 rubber 3.65 silicon rubber 1.46 ( If a glove with a.mass.of 99 ncreases in temperature by 15.3°F. how much energy was absorbed by the glove? A glove with a mass of 86.2 grams increases in temperature by 25.9°F whenit absorbs 1.71 kJ of eiergy, Calculate the spécific heat of the glove and predict its composition. (c), If a glove with a mass of 50.0 grams needs to absorb 1.65 kJ of energy, bow much will the_temperature of the glove increase for cach of the materials listed above? (d) Which is the best material for a heat-resistant glove?" (e) If you were designing a heat-resistant glove, what kind of specific heat would you look for? grams composed of cotten
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