Conceptual Physics (12th Edition)
12th Edition
ISBN: 9780321909107
Author: Paul G. Hewitt
Publisher: PEARSON
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Chapter 1, Problem 27RCQ
What is probably being misunderstood by a person who says, "But that's only a scientific theory"?
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10. Imagine you have a system in which you have 54 grams of ice. You can melt this
ice and then vaporize it all at 0 C. The melting and vaporization are done reversibly
into a balloon held at a pressure of 0.250 bar. Here are some facts about water you
may wish to know. The density of liquid water at 0 C is 1 g/cm³. The density of ice at 0
C is 0.917 g/cm³. The enthalpy of vaporization of liquid water is 2.496 kJ/gram and the
enthalpy of fusion of solid water is 333.55 J/gram.
Consider 1 mole of supercooled water at -10°C. Calculate the entropy change of the water when the
supercooled water freezes at -10°C and 1 atm.
Useful data:
Cp (ice) = 38 J mol-1 K-1
Cp (water) 75J mol −1
K
-1
Afus H (0°C) 6026 J mol −1
Assume Cp (ice) and Cp (water) to be independent of temperature.
The molar enthalpy of vaporization of benzene at its normal boiling point (80.09°C) is 30.72 kJ/mol.
Assuming that AvapH and AvapS stay constant at their values at 80.09°C, calculate the value of
AvapG at 75.0°C, 80.09°C, and 85.0°C.
Hint: Remember that the liquid and vapor phases will be in equilibrium at the normal boiling point.
Chapter 1 Solutions
Conceptual Physics (12th Edition)
Ch. 1 - Prob. 1RCQCh. 1 - Prob. 2RCQCh. 1 - When the Sun was directly overhead in Syene, why...Ch. 1 - Earth, like everything else illuminated by the...Ch. 1 - How does the Moon's diameter compare with the...Ch. 1 - Prob. 6RCQCh. 1 - Why did Aristarchus choose the time of a half Moon...Ch. 1 - What are the circular spots of light seen on the...Ch. 1 - What is the role of equations in this book?Ch. 1 - Outline some steps of the scientific method.
Ch. 1 - Distinguish among a scientific fact, a hypothesis,...Ch. 1 - In daily life, people are often praised for...Ch. 1 - What is the test for whether a hypothesis is...Ch. 1 - Prob. 14RCQCh. 1 - What test can you perform to increase the chance...Ch. 1 - Why are students of the arts encouraged to learn...Ch. 1 - Must people choose between science and religion?Ch. 1 - Psychological comfort is a benefit of having solid...Ch. 1 - Clearly distinguish between science and...Ch. 1 - Why is physics considered to be the basic science?Ch. 1 - Poke a hole in a piece of cardboard and hold the...Ch. 1 - Choose a particular day in the very near...Ch. 1 - What is the penalty for scientific fraud in the...Ch. 1 - Which of the following are scientific hypotheses?...Ch. 1 - Prob. 25RCQCh. 1 - Prob. 26RCQCh. 1 - What is probably being misunderstood by a person...Ch. 1 - The shadow cast by a vertical pillar in Alexandria...Ch. 1 - If Earth were smaller than it is, but the...Ch. 1 - The great philosopher and mathematician Bertrand...Ch. 1 - Bertrand Russell wrote, u I think we must retain...Ch. 1 - Your favorite young relative is wondering whether...
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