Chemistry: Principles and Reactions
8th Edition
ISBN: 9781305079373
Author: William L. Masterton, Cecile N. Hurley
Publisher: Cengage Learning
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Chapter 10, Problem 45QAP
Insulin is a hormone responsible for the regulation of glucose levels in the blood. An aqueous solution of insulin has an osmotic pressure of 2.5 mm Hg at 25°C. It is prepared by dissolving 0.100 g of insulin in enough water to make 125 mL of solution. What is the molar mass of insulin?
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Part II. Given two isomers: 2-methylpentane (A) and 2,2-dimethyl butane (B) answer the following:
(a) match structures of isomers given their mass spectra below (spectra A and spectra B)
(b) Draw the fragments given the following prominent peaks from
each spectrum:
Spectra A m/2 =43 and 1/2-57
spectra B m/2 = 43
(c) why is 1/2=57 peak in spectrum A more intense compared
to the same peak in spectrum B.
Relative abundance
Relative abundance
100
A
50
29
29
0
10
-0
-0
100
B
50
720
30
41
43
57
71
4-0
40
50
60 70
m/z
43
57
8-0
m/z = 86
M
90 100
71
m/z = 86
M
-O
0
10 20 30
40 50
60
70
80
-88
m/z
90
100
Part IV. C6H5 CH2CH2OH is an aromatic compound which was subjected to Electron Ionization - mass
spectrometry (El-MS) analysis. Prominent m/2 values: m/2 = 104 and m/2 = 9) was obtained.
Draw the structures of these fragments.
For each reaction shown below follow the curved arrows to complete each equationby showing the structure of the products. Identify the acid, the base, the conjugated acid andconjugated base. Consutl the pKa table and choose the direciton theequilibrium goes. However show the curved arrows. Please explain if possible.
Chapter 10 Solutions
Chemistry: Principles and Reactions
Ch. 10 - A solution is prepared by dissolving 12.15 g of...Ch. 10 - Prob. 2QAPCh. 10 - Prob. 3QAPCh. 10 - Solutions Introduced directly into the bloodstream...Ch. 10 - Silver ions can be found in some of the city water...Ch. 10 - Prob. 6QAPCh. 10 - Complete the following table for aqueous solutions...Ch. 10 - Complete the following table for aqueous solutions...Ch. 10 - Complete the following table for aqueous solutions...Ch. 10 - Complete the following table for aqueous solutions...
Ch. 10 - Prob. 11QAPCh. 10 - Prob. 12QAPCh. 10 - Prob. 13QAPCh. 10 - A solution is prepared by diluting 0.7850 L of...Ch. 10 - A bottle of phosphoric acid is labeled 85.0% H3PO4...Ch. 10 - Prob. 16QAPCh. 10 - Complete the following table for aqueous solutions...Ch. 10 - Complete the following table for aqueous solutions...Ch. 10 - Assume that 30 L of maple sap yields one kilogram...Ch. 10 - Juice (d=1.0g/mL) from freshly harvested grapes...Ch. 10 - Prob. 21QAPCh. 10 - Which of the following is more likely to be...Ch. 10 - Prob. 23QAPCh. 10 - Prob. 24QAPCh. 10 - Consider the process by which lead chloride...Ch. 10 - Prob. 26QAPCh. 10 - The Henry's law constant for the solubility of...Ch. 10 - The Henry's law constant for the solubility of...Ch. 10 - A carbonated beverage is made by saturating water...Ch. 10 - Air contains 78% nitrogen. At 25C, Henry's law...Ch. 10 - Vodka is advertised to be 80 proof. That means...Ch. 10 - What is the freezing point of maple syrup (66%...Ch. 10 - Calculate the vapor pressure of water over each of...Ch. 10 - Calculate the vapor pressure of water over each of...Ch. 10 - Prob. 35QAPCh. 10 - Consider an aqueous solution of urea, (CO(NH2)2)...Ch. 10 - Prob. 37QAPCh. 10 - Prob. 38QAPCh. 10 - Calculate the freezing point and normal boiling...Ch. 10 - How many grams of the following nonelectrolytes...Ch. 10 - What is the freezing point and normal boiling...Ch. 10 - Antifreeze solutions are aqueous solutions of...Ch. 10 - When 13.66 g of lactic acid, C3H6O3, are mixed...Ch. 10 - A solution consisting of 4.50 g of propylene...Ch. 10 - Insulin is a hormone responsible for the...Ch. 10 - Epinephrine (or adrenaline) is a hormone and...Ch. 10 - Lauryl alcohol is obtained from the coconut and is...Ch. 10 - The Rast method uses camphor (C10H16O) as a...Ch. 10 - Caffeine is made up of 49.5% C, 5.2% H, 16.5% O,...Ch. 10 - A compound contains 42.9% C, 2.4% H, 16.6% N, and...Ch. 10 - A biochemist isolates a new protein and determines...Ch. 10 - Prob. 52QAPCh. 10 - Estimate the freezing and boiling points of normal...Ch. 10 - Arrange 0.10 m aqueous solutions of the following...Ch. 10 - Aqueous solutions introduced into the stream y...Ch. 10 - What is the osmotic pressure of a 0.135 M solution...Ch. 10 - The freezing point of a 0.11 m solution of HNO2 is...Ch. 10 - The freezing point of a 0.21 m aqueous solution of...Ch. 10 - An aqueous solution of LiX is prepared by...Ch. 10 - An aqueous solution of M2O is prepared by...Ch. 10 - A sucrose (C12H22O11) solution that is 45.0%...Ch. 10 - An aqueous solution made up of 32.47 g of...Ch. 10 - How would you prepare 5.00 L of a solution that is...Ch. 10 - Carbon tetrachloride (CCl4) boils at 76.8C and has...Ch. 10 - Twenty-five milliliters of a solution...Ch. 10 - The Henry's law constant for the solubility of...Ch. 10 - Prob. 67QAPCh. 10 - Consider two solutions at a certain temperature....Ch. 10 - A pharmacist prepares an isotonic saline solution...Ch. 10 - One mole of CaCl2 is represented as where...Ch. 10 - One mole of Na2S is represented as where...Ch. 10 - Prob. 72QAPCh. 10 - Consider three test tubes. Tube A has pure water....Ch. 10 - The freezing point of 0.20 m HF is -0.38C. Is HF...Ch. 10 - A certain gaseous solute dissolves in water,...Ch. 10 - The freezing point of 0.10 M KHSO3 is -0.38C....Ch. 10 - Consider 2 vapor pressure curves A and B. They are...Ch. 10 - A gaseous solute dissolves in water. The solution...Ch. 10 - In your own words, explain (a) why seawater has a...Ch. 10 - Prob. 80QAPCh. 10 - Beaker A has 1.00 mol of chloroform, CHCl3, at...Ch. 10 - Prob. 82QAPCh. 10 - Prob. 83QAPCh. 10 - Prob. 84QAPCh. 10 - Prob. 85QAPCh. 10 - A martini, weighing about 5.0 oz (142 g), contains...Ch. 10 - When water is added to a mixture of aluminum metal...Ch. 10 - Prob. 88QAPCh. 10 - Prob. 89QAP
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Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY