Chemistry (8th Edition)

Chapter 9

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The different methods to obtain the energy content... more

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Potential ; Energy is defined as the capacity to ... more

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ΔEsystem is positive ; Energy is defined as the ... more

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Speed ; A state function is a function whose value... more

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work = 19.2 kJ. Work energy was absorbed by the ... more

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work = -0.25 kJ ; Work is defined as the distance ... more

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Energy is transferred as heat. and qsystem < 0 ; ... more

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ΔH = ΔE only when the reaction occurs without a ... more

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ΔE = -482 kJ ; Work (w) is defined as the distance... more

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ΔH = + 483.6 kJ ; Enthalpy is a measure of heat ... more

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ΔH = 159 kJ  ; Temperature is defined as the ... more

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39 kg of propane (C3H8) ; Heat (q) is defined as ... more

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The system is the chemical reaction inside the ... more

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The reaction is exothermic and ΔH° < 0 ; The term ... more

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The value for the enthalpy change in the ... more

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ΔH is positive ; A calorimeter is a device that is... more

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specific heat:  molar heat capacity: ; Specific ... more

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ΔH = -112 kJ/(mol H2SO4) ; The term system is used... more

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; The term system refers to the object that is ... more

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heat capacity =  825 J / oC ; Calorimetry is a ... more

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ΔH = + 25.8 kJ/(mol NH4NO3) ; The term system is ... more

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The arrows that represent the following reactions ... more

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The reaction is spontaneous at high temperatures ... more

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ΔH - positive (+ΔH)ΔS - positive (+ΔS)ΔG - ... more

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Temperature measures the thermal energy of a ... more

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The internal energy is the sum of the potential ... more

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Kinetic energy is the energy due to the movement ... more

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5.7 x 103 g ; Some pointers to answer this ... more

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-70 JThe sign of the energy is negative, which ... more

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7.6 JThe energy flows into the system.  ; Work is ... more

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Sign of work: negativew = -1.53 kJΔV = 15.1 L ; ... more

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ΔE only involves heat change and no expansion work... more

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ΔH is equal to ΔE when the expansion work is zero... more

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-45.2 kJ ; Work is a transfer of energy related to... more

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ΔE = -120 kJ ; Some pointers to solve this problem... more

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ΔE = -0.30 kJ ; Enthalpy is defined as the heat ... more

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ΔEsystem = -209 kJΔHsystem = -244 kJΔEsurroundings... more

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ΔH = 45.4 kJ ; Enthalpy change (ΔH) is the heat ... more

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ΔH = 70.0 kJ ; Enthalpy change (ΔH) is the heat ... more

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25.5 kJ ; Enthalpy change (ΔH) is the measured ... more

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217 kJ is required to vaporize H2O. This energy is... more

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-131 kJ ; The heat change that is measured at ... more

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ΔHo is -8.01 kJ. This is an exothermic reaction ... more

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1.000 x 103 kJ ; Enthalpy change is used to ... more

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0.388 kJ of heat is releasedExothermic ; Enthalpy ... more

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1930 kJ of heat is absorbedEndothermic ; Enthalpy ... more

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Heat capacity is an extensive property while ... more

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Bomb calorimeter measures internal energy rather ... more

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1.23 J/g-°C ; Molar heat capacity (Cm) is defined ... more

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0.523 J/g-°C25.0 J/mol-°C ; The quantity of heat ... more

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-32 kJ ; The quantity of heat required to raise ... more

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5.75 x 104 J ; The quantity of heat required to ... more

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3.1 °C ; According to the law of conservation of ... more

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59.7 °C ; According to the law of conservation of ... more

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-83.6 kJ/mol ; According to the law of ... more

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-56.1 kJ/mol Using 10.00 grams of HCl in 248.0 ... more

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-45.4 kJ/g-3.55 x 103 kJ/mol ; According to the ... more

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-29.5 kJ/g-1.36 x 103 kJ/mol ; According to the ... more

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-469 kJ/mol ; According to the law of conservation... more

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0.269 J/g-°C ; According to the law of ... more

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-120 kJ/mol ; According to the law of conservation... more

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-56 kJ ; According to the law of conservation of ... more

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Hess's law states that the enthalpy change for a ... more

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  ; According to Hess's law, if a reaction can be ... more

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201.9 kJ ; According to Hess's law, if a reaction ... more

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-171.5 kJ ; According to Hess's law, if a reaction... more

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-207.4 kJ ; According to Hess's law, if a reaction... more

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The standard enthalpy of formation is the amount ... more

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The standard state of an element is its form at 25... more

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-395.7 kJ/mol ; According to Hess's law, if a ... more

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48.6 kJ/mol ; According to Hess's law, if a ... more

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-492.6 kJ ; The standard enthalpy change for a ... more

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  ; In combustion reactions, a compound is burned ... more

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  ; In combustion reactions, a compound is burned ... more

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-16.9 kJ/mol ; The standard enthalpy change for a ... more

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 36.94 kJ/mL ; In combustion reactions, a compound... more

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Entropy (S) is the measure of how disordered a ... more

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The spontaneity of a reaction is defined by the ... more

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An endothermic reaction means that heat is ... more

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An exothermic reaction means that heat is released... more

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None of the items have a +ΔG. ; The spontaneity of... more

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For the given situation, the mixing of air with ... more

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The one reactant broke up into three products as ... more

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The reactants (ethylene and chlorine) are gases ... more

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569 K ; Processes or reactions proceed according ... more

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Since ΔH > 0 and  ΔS 0ΔH > TΔSnonspontaneousΔG = ... more

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929.9 K ; Processes or reactions proceed according... more

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279 K ; Processes or reactions proceed according ... more

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