2. How much heat is released by a system when 46 J of work is done on it to decrease its energy to 24 J? COMPLETE SOLUTION. USE GRESA METHOD TO SOLVE.

Q: Explain how ΔH, heat of reaction is a state function

A: ∆H, heat of reaction is a state function.

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Q: Which of the following signs on q and w represent a system that is doing work on the surroundings,…

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A:

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A:

Q: Add your experimentally determined enthalpies in the same way as above: Explain how the sum of your…

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Q: Determine qsoln for each trial and report in units of joules. Specific Heat= 4.02

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A:

Q: Use the given standard enthalpies of formation to calculate the ΔHo (in kJ) for the hypothetical…

A: Given; 2A2D (g) + 3E2 (g) → 2A2E (l) + 2DE2 (g)  Standard enthalpies of formation of reactant and…

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Q: (a) What are the units of molar heat capacity? (b) What arethe units of specific heat? (c) If you…

A: (a) Molar Heat capacity is the heat required to raise the temperature of one mole of substance by…

Q: Show your calculations for the heat capacity of the calorimeter (C)

A: He have been asked to find the heat capacity of calorimeter  Given,  Mass of hot water = mass of…

Q: . What is the essence of determining the heat capacity of the calorimeter? Is it possible to replace…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Which object has the greater heat capacity?

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A: Given question is : Does the burning of propane in outdoor grill have positive or negative enthalpy…

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A:

Q: Two parter, thank you in advance! Use standard enthalpies of formation to determine ΔHorxnfor:…

A: Standard enthalpy of formation ΔH for NO2, HNO3, H2O and NO is given.

Q: D. Consider the following reaction: 2H,(g) + O,(g) –→ 2H,0(1) AH = -572 kJ %3D - a. How much heat is…

A: "Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

Q: 7.5 g KNO3 dissociated in 49.0 g of water in a coffee cup calorimeter. The thermometer reading…

A: Given: Mass of KNO3 dissolved = 7.5 g. Mass of water = 49.0 g. Initial temperature of water = 20.4…

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A: The ∆Hcombustion is the amount of heat in the energy needed to burn per mole of a substance. Its…

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Q: Calculate w for a system that absorbs 260 kJ of heat and for which ∆E is 157 kJ. Is the work done on…

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Q: 1. What is the essence of determining the heat capacity of the calorimeter? Is it possible to…

A: 1. To determine the essence of the heat capacity of the calorimeter.

Q: In the calorimeter experiment, you mixed 50 mL of 1.0 M NaOH with 50 mL of approximately 1.0 M HCI.…

A: A positive ΔHº value represents an addition of energy from the reaction (and from the surroundings),…

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A: According to First law of thermodynamics, energy cannot be created nor destroyed but can be changed…

Q: Given the following data   Calculate ΔH for reaction   On the basis of the enthalpy change, is this…

A: Answer is explained below.

Q: Why did you use 4.184 J/goC as the specific heat capacities of the solutions? a. Because all kinds…

A: Specific heat capacities of the solutions = 4.184 J/g oC

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Q: he assumption made when chemical reactions are performed which allows u

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Q: Which of the following signs on q and w represent a system that is doing work on the surroundings,…

A: There are certain sign conventions related to work and heat based on system and surroundings.

Q: 1. Use the given information to calculate the enthalpy of reaction for the following reaction: P4010…

A:

Q: Determine in which case is heat added to to the system? ?U=-43.0J ; w=40.0J or ?U=31.0J ; w=34.0J

A: According to the First Law of Thermodynamics: ∆U=q+w                             ...... (1) where ∆U…

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A: Given : Heat energy = 15.4 kJ Work done = 6.3 kJ

Q: Suppose that the reaction of 3.49 moles produces 1.46 kJ of heat. What is the molar enthalpy of the…

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Q: Which of the following signs on q and w represent a system that is doing work on the surroundings,…

A: The answer is as follows:

Q: b. ,mass 4. If a pool and a cup of water had the same temperature, which would have greater therma…

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Q: II. Explain why enthalpy change cannot be used as a guide in predicting spontaneity of a reaction.…

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A: Given:2Al(s) + 3Cl2(g) → 2AlCl3(s)

Q: 1. Calculate w for a system that absorbs 260 kJ of heat and for which AE = 157 kJ. Is the work done…

A:

Q: Explain in detail what standard enthalpy changes of formation and combustion are, and the…

A: Please find the below attachment.   Please rate helpful.   Thank you.