(a)
Interpretation: The 85.21cal of energy needs to be converted to joules.
Concept introduction: The following conversion factor can be used to solve the problem:
1cal=4.184J
(a)
Answer to Problem 48A
85.21cal=356.52J
Explanation of Solution
1cal=4.184J
Conversion of 85.21cal to J is as follows:
Thus 85.21cal=356.52J
(b)
Interpretation: The 672.1J energy needs to be converted to calories.
Concept introduction: The following conversion factor can be used to solve the problem:
1cal=4.184J
(b)
Answer to Problem 48A
672.1J=160.64 cal
Explanation of Solution
1cal=4.184J
Conversion of 672.1J to cal is as follows:
Thus 672.1J=160.64 cal
(c)
Interpretation: 8.921kJ of energy needs to be converted to joules.
Concept introduction: Kilo joule is SI unit of energy, which is equivalent to 1000 Joules.
(c)
Answer to Problem 48A
8.921kJ=8921J
Explanation of Solution
1kJ=1000J
Conversion of 8.921kJ to joules is as follows:
Thus 8.921kJ=8921J
(d)
Interpretation: 556.3 cal energy needs to be converted to kilojoules.
Concept introduction: The following conversion factors can be used to solve the given problem:
1kJ=1000J
1cal=4.184J
1kcal=1000cal
(d)
Answer to Problem 48A
556.3cal=2.33kJ
Explanation of Solution
1kJ=1000J
1cal=4.184J
1kcal=1000cal
Conversion of 556.3cal into kilojoules is as follows:
Thus 556.3cal=2.33kJ
Chapter 10 Solutions
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