Chemistry For Today: General, Organic, And Biochemistry, Loose-leaf Version
9th Edition
ISBN: 9781305968707
Author: Spencer L. Seager
Publisher: Brooks Cole
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Chapter 18, Problem 18.65E
Interpretation Introduction
Interpretation:
The molecular forces involved in the closing of ruptures of cellular membranes are to be stated.
Concept introduction:
Lipids are the organic compounds, which are fatty acids or the derivatives of fatty acids. They are insoluble in water but are soluble in non-polar organic solvents. Membranes are made up of lipids. These protect the organelles from the surroundings. The lipid membranes are selective in nature due to the bilayer arrangement of the lipids.
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Using the conditions of spontaneity to deduce the signs of AH and AS
Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy
AS.
Note: if you have not been given enough information to decide a sign, select the "unknown" option.
reaction
observations
conclusions
A
This reaction is always spontaneous, but
proceeds slower at temperatures above
120. °C.
ΔΗ is
(pick one)
AS is
(pick one)
ΔΗ is
(pick one)
B
This reaction is spontaneous except above
117. °C.
AS is
(pick one)
ΔΗ is
(pick one)
This reaction is slower below 20. °C than
C
above.
AS is
|(pick one)
?
18
Ar
1
Calculating the pH at equivalence of a titration
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Your answer is incorrect.
0/5
a
A chemist titrates 70.0 mL of a 0.7089 M hydrocyanic acid (HCN) solution with 0.4574M KOH solution at 25 °C. Calculate the pH at equivalence. The pK of
hydrocyanic acid is 9.21.
Round your answer to 2 decimal places.
Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of KOH solution added.
pH
=
11.43]
G
00.
18
Ar
B•
Biological Macromolecules
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Chapter 18 Solutions
Chemistry For Today: General, Organic, And Biochemistry, Loose-leaf Version
Ch. 18 - What is the basis for deciding if a substance is a...Ch. 18 - List two major functions of lipids in the human...Ch. 18 - What functional group is common to all...Ch. 18 - Prob. 18.4ECh. 18 - Prob. 18.5ECh. 18 - Describe four structural characteristics exhibited...Ch. 18 - Describe the structure of a micelle formed by the...Ch. 18 - Prob. 18.8ECh. 18 - Prob. 18.9ECh. 18 - Explain why the melting points of unsaturated...
Ch. 18 - What structural feature of a fatty acid is...Ch. 18 - How are fats and oils structurally similar? How...Ch. 18 - From Figure 18.7, arrange the following substances...Ch. 18 - Draw the structure of a triglyceride that contains...Ch. 18 - Prob. 18.15ECh. 18 - The percentage of fatty acid composition of two...Ch. 18 - Prob. 18.17ECh. 18 - Prob. 18.18ECh. 18 - Prob. 18.19ECh. 18 - Why is the hydrogenation of vegetable oils of...Ch. 18 - Prob. 18.21ECh. 18 - Write reactions to show how each of the following...Ch. 18 - Draw the structure of a wax formed from oleic acid...Ch. 18 - Prob. 18.24ECh. 18 - Draw the structure of a wax formed from stearic...Ch. 18 - Prob. 18.26ECh. 18 - Prob. 18.27ECh. 18 - Draw the general block diagram structure of a...Ch. 18 - Draw the structure of a phosphoglyceride...Ch. 18 - Describe two biological roles served by the...Ch. 18 - Prob. 18.31ECh. 18 - What is the structural difference between a...Ch. 18 - Prob. 18.33ECh. 18 - Prob. 18.34ECh. 18 - List two structural differences between...Ch. 18 - Prob. 18.36ECh. 18 - Describe the structural similarities and...Ch. 18 - Give another name for glycolipids. In what tissues...Ch. 18 - Prob. 18.39ECh. 18 - Prob. 18.40ECh. 18 - How does the polarity of the phosphoglycerides...Ch. 18 - Prob. 18.42ECh. 18 - Prob. 18.43ECh. 18 - Prob. 18.44ECh. 18 - Explain how bile salts aid in the digestion of...Ch. 18 - Prob. 18.46ECh. 18 - Prob. 18.47ECh. 18 - Prob. 18.48ECh. 18 - Prob. 18.49ECh. 18 - Prob. 18.50ECh. 18 - How are testosterone and progesterone structurally...Ch. 18 - Prob. 18.52ECh. 18 - Prob. 18.53ECh. 18 - Prob. 18.54ECh. 18 - Prob. 18.55ECh. 18 - Prob. 18.56ECh. 18 - Prob. 18.57ECh. 18 - Prob. 18.58ECh. 18 - Prob. 18.59ECh. 18 - Prob. 18.60ECh. 18 - Prob. 18.61ECh. 18 - Prob. 18.62ECh. 18 - Prob. 18.63ECh. 18 - Prob. 18.64ECh. 18 - Prob. 18.65ECh. 18 - Prob. 18.66ECh. 18 - Prob. 18.67ECh. 18 - Prob. 18.68ECh. 18 - Prob. 18.69ECh. 18 - Prob. 18.70ECh. 18 - Prob. 18.71ECh. 18 - When a doughnut is placed on a napkin, the napkin...Ch. 18 - Fats belong to the class of organic compounds...Ch. 18 - Identify each of the following characteristics as...Ch. 18 - Identify which sex hormones testosterone,...Ch. 18 - Prob. 18.76ECh. 18 - In diseases of the gallbladder, which of the...Ch. 18 - Steroids are classified as: a.carbohydrates....Ch. 18 - Accumulation of cholesterol leads to the hardening...Ch. 18 - Cholesterol, in spite of its bad reputation, is an...Ch. 18 - Bile is manufactured in the: a. duodenum. b....Ch. 18 - The basic structure of cell membrane is a: a....Ch. 18 - The mineralocorticoid _____ is a product of the...Ch. 18 - Prob. 18.84ECh. 18 - Prob. 18.85E
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