Chemical Principles
8th Edition
ISBN: 9781305581982
Author: Steven S. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Textbook Question
Chapter 9, Problem 5DQ
Consider the following statements: “Heat is a form of energy, and energy is conserved. The heat lost by the system must be equal to the amount of heat gained by the surroundings. Therefore, heat is conserved.” Indicate everything you think is correct in these statements and everything you think is incorrect in these statements. Correct the incorrect statements and explain.
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Chapter 9 Solutions
Chemical Principles
Ch. 9 - Objects placed together eventually reach the same...Ch. 9 - What is meant by the term lower in energy? Which...Ch. 9 - A fire is started in a fireplace by striking a...Ch. 9 - Liquid water turns to ice. Is this process...Ch. 9 - Consider the following statements: “Heat is a form...Ch. 9 - Prob. 6DQCh. 9 - Explain why oceanfront areas generally have...Ch. 9 - Predict the signs of q and w for the process of...Ch. 9 - Hess’s law is really just another statement of the...Ch. 9 - Prob. 10DQ
Ch. 9 - Prob. 11DQCh. 9 - Prob. 12DQCh. 9 - Prob. 13DQCh. 9 - Prob. 14DQCh. 9 - Prob. 15ECh. 9 - Consider the following potential energy diagrams...Ch. 9 - Consider an airplane trip from Chicago, Illinois,...Ch. 9 - Consider the following diagram when answering the...Ch. 9 - Assuming gasoline is pure C8H18(l) , predict the...Ch. 9 - Prob. 20ECh. 9 - Prob. 21ECh. 9 - A piston performs work of 210.Latm on the...Ch. 9 - A system undergoes a process consisting of the...Ch. 9 - Calculate the internal energy change for each of...Ch. 9 - Prob. 25ECh. 9 - Prob. 26ECh. 9 - One mole of H2O(g) at 1.00atm and 100.C occupies a...Ch. 9 - Prob. 28ECh. 9 - Prob. 29ECh. 9 - Prob. 30ECh. 9 - Prob. 31ECh. 9 - Are the following processes exothermic or...Ch. 9 - Prob. 33ECh. 9 - Prob. 34ECh. 9 - Prob. 35ECh. 9 - Prob. 36ECh. 9 - Prob. 37ECh. 9 - For the following reactions at constant pressure,...Ch. 9 - Calculate the energy required to heat 1.00kg of...Ch. 9 - Calculate q , w , E , and H for the process in...Ch. 9 - Consider 111J of heat added to 30.3g of Ne on STP...Ch. 9 - Consider a sample containing 2.00moles of a...Ch. 9 - Prob. 43ECh. 9 - The specific heat capacity of silver is...Ch. 9 - Consider the substances in Table9.3 . Which...Ch. 9 - A 150.0-g sample of a metal at 75.0C is added to...Ch. 9 - Prob. 47ECh. 9 - Prob. 48ECh. 9 - Prob. 49ECh. 9 - Prob. 50ECh. 9 - In a coffee cup calorimeter, 50.0mL of 0.100MAgNO3...Ch. 9 - In a coffee cup calorimeter, 100.0mL of 1.0MNaOH...Ch. 9 - A coffee cup calorimeter initially contains 125g...Ch. 9 - In a coffee cup calorimeter, 1.60g of NH4NO3 is...Ch. 9 - Prob. 55ECh. 9 - Consider the reaction...Ch. 9 - The heat capacity of a bomb calorimeter was...Ch. 9 - The combustion of 0.1584g benzoic acid increases...Ch. 9 - Prob. 59ECh. 9 - Calculate w and E when 1mole of a liquid is...Ch. 9 - Prob. 61ECh. 9 - Calculate H for the reaction...Ch. 9 - Given the following data:...Ch. 9 - Given the following data:...Ch. 9 - Prob. 65ECh. 9 - Given the following data:...Ch. 9 - Combustion reactions involve reacting a substance...Ch. 9 - Given the following data: 2O3(g)3O2(g)H=427kJ...Ch. 9 - Prob. 69ECh. 9 - Prob. 70ECh. 9 - Prob. 71ECh. 9 - The combustion of methane can be represented as...Ch. 9 - Prob. 73ECh. 9 - Prob. 74ECh. 9 - Calculate H for each of the following reactions...Ch. 9 - The reusable booster rockets of the space shuttle...Ch. 9 - Prob. 77ECh. 9 - Prob. 78ECh. 9 - At 298K , the standard enthalpies of formation for...Ch. 9 - Prob. 80ECh. 9 - Prob. 81ECh. 9 - The standard enthalpy of combustion of ethene gas...Ch. 9 - Prob. 83ECh. 9 - Prob. 84ECh. 9 - Prob. 85ECh. 9 - Assume that 4.19106kJ of energy is needed to heat...Ch. 9 - Prob. 87ECh. 9 - Prob. 88ECh. 9 - Prob. 89ECh. 9 - Some automobiles and buses have been equipped to...Ch. 9 - Consider the following cyclic process carried out...Ch. 9 - Determine E for the process H2O(l)H2O(g) at 25C...Ch. 9 - The standard enthalpy of formation of H2O(l) at...Ch. 9 - Prob. 94AECh. 9 - Prob. 95AECh. 9 - Prob. 96AECh. 9 - Prob. 97AECh. 9 - Prob. 98AECh. 9 - Prob. 99AECh. 9 - Prob. 100AECh. 9 - Prob. 101AECh. 9 - Prob. 102AECh. 9 - Prob. 103AECh. 9 - Prob. 104AECh. 9 - Prob. 105AECh. 9 - High-quality audio amplifiers generate large...Ch. 9 - Prob. 107AECh. 9 - Prob. 108AECh. 9 - Prob. 109AECh. 9 - Prob. 110AECh. 9 - Prob. 111AECh. 9 - Prob. 112AECh. 9 - Prob. 113AECh. 9 - Prob. 114AECh. 9 - Prob. 115AECh. 9 - The heat required to raise the temperature from...Ch. 9 - Prob. 117CPCh. 9 - Prob. 118CPCh. 9 - The heat of vaporization of water at the normal...Ch. 9 - Consider the following reaction at 248C and...Ch. 9 - Prob. 121CPCh. 9 - Prob. 122CPCh. 9 - Prob. 123CPCh. 9 - You have a 1.00-mole sample of water at -30.C ,...Ch. 9 - Prob. 125MPCh. 9 - A gaseous hydrocarbon reacts completely with...
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- Draw the stepwise mechanism for the reactionsarrow_forwardPart I. a) Draw reaction mechanism for the transformations of benzophenone to benzopinacol to benzopinaco lone b) Pinacol (2,3-dimethyl, 1-3-butanediol) on treatment w/ acid gives a mixture of pina colone (3,3-dimethyl-2-butanone) and 2, 3-dimethyl - 1,3-butadiene. Give reasonable mechanism the formation of the products Forarrow_forward3. The explosive decomposition of 2 mole of TNT (2,4,6-trinitrotoluene) is shown below: Assume the C(s) is soot-basically atomic carbon (although it isn't actually atomic carbon in real life). 2 CH3 H NO2 NO2 3N2 (g)+7CO (g) + 5H₂O (g) + 7C (s) H a. Use bond dissociation energies to calculate how much AU is for this reaction in kJ/mol.arrow_forward
- Part I. Draw reaction mechanism for the transformations of benzophenone to benzopinacol to benzopinaco lone and answer the ff: Pinacol (2,3-dimethyl, 1-3-butanediol) on treatment w/ acid gives a mixture of pina colone and (3,3-dimethyl-2-butanone) 2,3-dimethyl-1,3-butadiene. Give reasonable mechanism the formation of the products Forarrow_forwardShow the mechanism for these reactionsarrow_forwardDraw the stepwise mechanismarrow_forward
- Draw a structural formula of the principal product formed when benzonitrile is treated with each reagent. (a) H₂O (one equivalent), H₂SO₄, heat (b) H₂O (excess), H₂SO₄, heat (c) NaOH, H₂O, heat (d) LiAlH4, then H₂Oarrow_forwardDraw the stepwise mechanism for the reactionsarrow_forwardDraw stepwise mechanismarrow_forward
- Part I. Draw reaction mechanism for the transformations of benzophenone to benzopinacol to benzopinaco lone and answer the ff: a) Give the major reason for the exposure of benzophenone al isopropyl alcohol (w/acid) to direct sunlight of pina colone Mechanism For b) Pinacol (2,3-dimethy 1, 1-3-butanediol) on treatment w/ acid gives a mixture (3,3-dimethyl-2-butanone) and 2, 3-dimethyl-1,3-butadiene. Give reasonable the formation of the productsarrow_forwardwhat are the Iupac names for each structurearrow_forwardWhat are the IUPAC Names of all the compounds in the picture?arrow_forward
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