Chemistry & Chemical Reactivity
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?

  1. (a) Breaking the P—O bond in ATP is an exothermic process.
  2. (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
  3. (c) Breaking bonds is an endothermic process.
  4. (d) The energy released in the hydrolysis of ATP may be used to run endothermic reactions in a cell.
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Question 15.62
(a) Consider the hypothetical element X. XO reacts with hydrogen gas to form XH;OH. Calculate the enthalpy of this reaction given that: (i) the enthalpy change that occurs when X reacts with oxygen gas to form XO is -221.0 kJ (ii) the enthalpy change that occurs when X reacts with oxygen gas and hydrogen gas to form XH,OH is -402.4 kJ. Calculate the distance between the centers of Y²* and Z² ions in a YZ lattice given that when 3.6 g of the compound are formed from its gaseous ions, 3.8 kJ of energy are released. The proportionality constant, k = 8.01 x 101" J pm. Molar mass of YZ: 257 g moľ' (b) (c) When a sample of vanadium metal absorbs 353 kJ of energy, the 'd' electrons of the metal atoms undergo a transition from their ground state to the fifth electron shell. Calculate the mass of this metal sample.
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 (c)                1/2H2(g) + 1/2Cl2(g) →HCl(g)                       ΔH = -92.3 kJ   Calculate the value of ΔH for the reaction: B2H6(g) + 6Cl2(g) →2BCl3(g) + 6HCl(g)       ΔH = ?     Select one: a.-1476KJ b.-1376KJ c. -1576KJ d.-1576KJ

Chapter 24 Solutions

Chemistry & Chemical Reactivity

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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