Explain why the first law of thermodynamics prohibits the possibility of perpetual motion machines. Concept Introduction: First law of thermodynamics: According to first law, the total energy of the universe remains constant.
Explain why the first law of thermodynamics prohibits the possibility of perpetual motion machines. Concept Introduction: First law of thermodynamics: According to first law, the total energy of the universe remains constant.
Solution Summary: The author explains that the first law of thermodynamics prohibits the existence of perpetual motion machines.
Science that deals with the amount of energy transferred from one equilibrium state to another equilibrium state.
Chapter 17, Problem 17.75QP
(a)
Interpretation Introduction
Interpretation:
Explain why the first law of thermodynamics prohibits the possibility of perpetual motion machines.
Concept Introduction:
First law of thermodynamics: According to first law, the total energy of the universe remains constant.
(b)
Interpretation Introduction
Interpretation:
The given statement that is the second law of thermodynamics prohibits the existence of perpetual motion of machines should be shown.
Concept Introduction:
First law of thermodynamics: According to first law, the total energy of the universe remains constant.
Second law of thermodynamics: According to second law of thermodynamics, the entropy of the universe is the sum of the entropy of the system and the surroundings. For all spontaneous process the entropy of the universe increases.
Predict the major products of the following organic reaction:
NC
Δ
?
Some important Notes:
• Draw the major product, or products, of the reaction in the drawing area below.
• If there aren't any products, because no reaction will take place, check the box below the drawing area instead.
• Be sure to draw bonds carefully to show important geometric relationships between substituents.
Note: if your answer contains a complicated ring structure, you must use one of the molecular fragment stamps (available in the menu at right) to enter the
ring structure. You can add any substituents using the pencil tool in the usual way.
Click and drag to start drawing a
structure.
Х
а
Predict the major products of this organic reaction.
Be sure you use dash and wedge bonds to show stereochemistry where it's important.
+
☑
OH
1. TsCl, py
....
文
P
2. t-BuO K
Click and drag to start
drawing a structure.
Consider this organic reaction:
(
Draw the major products of the reaction in the drawing area below. If there won't be any major products, because this reaction won't happen at a significant
rate, check the box under the drawing area instead.
Click and drag to start drawing a structure.
Х
:
а
ค
1
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