Chemistry & Chemical Reactivity
9th Edition
ISBN: 9781133949640
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Chapter 24, Problem 42SCQ
Which of the following statements is/are true?
- (a) Breaking the P—O bond in ATP is an exothermic process.
- (b) Making a new bond between the phosphorus atom in the phosphate group being cleaved off ATP and the Oil group of water is an exothermic process
- (c) Breaking bonds is an endothermic process.
- (d) The energy released in the hydrolysis of ATP may be used to run endothermic reactions in a cell.
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One of the best-selling light, or low-calorie, beers is 4.2%alcohol by volume and a 12-oz serving contains 110 Calories;remember: 1 Calorie = 1000 cal = 1 kcal. To estimatethe percentage of Calories that comes from thealcohol, consider the following questions. (a) Write abalanced chemical equation for the reaction of ethanol,C2H5OH, with oxygen to make carbon dioxide andwater. (b) Use enthalpies of formation in Appendix Cto determine ΔH for this reaction. (c) If 4.2% of the totalvolume is ethanol and the density of ethanol is0.789 g/mL, what mass of ethanol does a 12-oz servingof light beer contain? (d) How many Calories arereleased by the metabolism of ethanol, the reaction frompart (a)? (e) What percentage of the 110 Calories comesfrom the ethanol?
Given :
(a) BCl3(g) + 3H2O(l) →H3BO3(s) + 3HCl(g) ΔH = -112.5 kJ
(b) B2H6(g) + 6H2O(l) →2H3BO3(s) + 6H2(g) ΔH = -493.4 kJ
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Calculate the value of ΔH for the reaction:
B2H6(g) + 6Cl2(g) →2BCl3(g) + 6HCl(g) ΔH = ?
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a.-1476KJ
b.-1376KJ
c. -1576KJ
d.-1576KJ
Chapter 24 Solutions
Chemistry & Chemical Reactivity
Ch. 24.1 - Draw the Lewis structure for the tripeptide...Ch. 24.1 - Prob. 1RCCh. 24.1 - Prob. 2RCCh. 24.1 - Prob. 3RCCh. 24.2 - Prob. 1RCCh. 24.2 - Prob. 2RCCh. 24.2 - Prob. 3RCCh. 24.3 - What is the sequence of the strand of DNA...Ch. 24.3 - Prob. 2CYUCh. 24.3 - 1. Which breaks down more quickly in an aqueous...
Ch. 24.3 - Prob. 2RCCh. 24.3 - 3. Which amino acid is selected by the mRNA codon...Ch. 24.3 - Kynamro has the hydrogen bonding sequence:...Ch. 24.3 - The formula of Kynamro is...Ch. 24.3 - Prob. 3QCh. 24.4 - 1. Which of the following is not an example of a...Ch. 24.4 - Prob. 2RCCh. 24.5 - Prob. 1RCCh. 24.5 - Prob. 2RCCh. 24.5 - Prob. 1QCh. 24.5 - Prob. 2QCh. 24.5 - Prob. 3QCh. 24 - (a) Draw the Lewis structure for the amino acid...Ch. 24 - (a) Draw the Lewis structure for the amino acid...Ch. 24 - Prob. 3PSCh. 24 - Prob. 4PSCh. 24 - Draw Lewis structures for the two dipeptides that...Ch. 24 - Do the amino acid sequences: valine-asparagine and...Ch. 24 - Draw the Lewis structure for the tripeptide...Ch. 24 - Prob. 8PSCh. 24 - Prob. 9PSCh. 24 - Prob. 10PSCh. 24 - Prob. 11PSCh. 24 - Prob. 12PSCh. 24 - (a) Draw the structural formula for the sugar...Ch. 24 - (a) Draw the structural formula for the sugar -D-2...Ch. 24 - Prob. 15PSCh. 24 - Prob. 16PSCh. 24 - Given the following nucleotide sequence in DNA:...Ch. 24 - Given the following nucleotide sequence in DNA: 5'...Ch. 24 - Prob. 19PSCh. 24 - If a drop of oleic acid is added to a dish of...Ch. 24 - What structure do all steroids have in common?Ch. 24 - Prob. 22PSCh. 24 - Prob. 23PSCh. 24 - The chemical equation for the fermentation of...Ch. 24 - Prob. 25PSCh. 24 - Prob. 26PSCh. 24 - Prob. 27GQCh. 24 - Prob. 28GQCh. 24 - Prob. 29GQCh. 24 - Prob. 30GQCh. 24 - Prob. 31GQCh. 24 - There are 41 = 4 mononucleotides of DNA, there are...Ch. 24 - Prob. 33GQCh. 24 - The first step of the metabolic process known as...Ch. 24 - Prob. 35ILCh. 24 - Insulin is a protein important in the metabolism...Ch. 24 - Prob. 37SCQCh. 24 - Prob. 38SCQCh. 24 - Do the DNA sequences ATGC and CGTA represent the...Ch. 24 - Prob. 41SCQCh. 24 - Which of the following statements is/are true? (a)...
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