(1) Calculate (a) q when a system does 54 J of work and its energy decreases by 72 J. (b) DE for a gas that releases 38 J of heat and has 102 J of work done on it. (2) Consider the combustion of one mole of methyl alcohol, CH3OH(l), which yields carbon dioxide gas and steam. (a) Write a thermochemical equation for the reaction. (Use Table 8.2.) (b) Calculate DE at 258C.

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Q: A system undergoes a process consisting of the following two steps: Step 1: The system absorbs 71 J…

A: The relationship between the parameters is given as where w = work and q = heat

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Q: A system undergoes a process consisting of the following two steps: Step 1: The system absorbs 72 J…

A: Please have a look on the solution attached below

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Q: A system undergoes a process consisting of the following two steps: Step 1: The system absorbs 73 J…

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A: a. The enthalpy of the reaction can be related to enthalpy of formation of the involved species as:…

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A: We have given that  Heat absorbed by system =q= 537KJ  Work done by system is always negative   W =…

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A: Exothermic reaction is the reaction in which energy is released in the formation of products while…

Q: 5.114 A 3.52-g sample of ammonium nitrate (NH4NO3)was added to 80.0 mL of water in a…

A: Given that : Mass of ammonium nitrate = 3.52g Mass of water = 80.0mL = 80.0g Change in temperature…

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A: Internal energy of a system is the overall energy that belongs to the system.  Heat is denoted by…

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A: Given information: Mass of water = 250 g Initial temperature (Ti) = 22 oC Final temperature (Tf) =…

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A: Given : ∆Esys = +148 kJ Work on he surroundings = 34 kJ

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Q: Which statement is true of the internal energy of the system and its surroundings following a…

A: Internal energy of a system is the summation of potential and kinetic energy of that system. Or the…

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A: According to first law of thermodynamics the change in internal energy is expressed as shown below:

Q: 2. How much heat, in joules, is required to raise the temperature of 1.82 Kg of water by 3.32°C?

A: Rise in Temperature (∆T) =3.32 °C  Mass of water (m) = 1.82 kg = 1.82 × 103 g Heat (q) =?

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A: The process happening on the system is of two steps given as,

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A: Given is 25.0 g ethyl alcohol  Heat capacity  = Hc = 2.42 J/g°C Specific heat = ?

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A: The thermodynamics is the branch of science which deals with the heat and other forms of energy.…

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A: “Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

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A: Given: (3) work done by gas=135J Absorbed heat=156J To find: change in internal energy of the…

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Q: What is the AE of a system if 184 kJ of work is done on the system and it loses 267 kJ of heat?

A: We use the first law of thermodynamic for calculating the change in internal energy. This low state…

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A: Enthalpy can be defined as the total amount of heat of the system which can be represented by a…

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A: Enthalpy is Heat flow in a chemical reaction at constant pressure.

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A: The reaction given is Enthalpy change of reaction is -891 KJ.

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Q: A system undergoes a process consisting of the following two steps: Step 1: The system absorbs 71 J…

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Q: 1. Why is it necessary to indicate the physical state of all reactants and products when giving the…

A: Enthalpy change of the reaction (ΔHrxn) is the amount of energy change during a chemical reaction.

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Q: When methanol, CH,OH, is burned in the presence of oxygen gas, O,, a large amount of heat energy is…

A: Given information:                      CH3OH(g) + 32O2(g)  → CO2 (g)  + 2H2O(l)        ∆H = -764 kJ

Q: 19. The combustion of hydrogen-oxygen mixtures is used to produce very high temperatures (approxi-…

A: Given,

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A: We have to calculate the moles of hydrogen gas required.

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