1. Internal energy change is the sum of heat and work. Explain why the internal energy change of the reaction between silver acetate and sodium chloride to make silver chloride can be determined with only a small error by determining the heat of the reaction.

Q: Given the reaction: 2??2?3(?) → 4??(?) + 3?2(?) ∆?? = 2269.4 ?? How much heat in kJ is required to…

A: Given equation is2Cr2O3→4Cr+3O2         ∆G=2269.4 kJfrom balanced equation4 moles of Cr production…

Q: Molar Mass: C3H8  = 44.097  H20 = 18.015  CO = 28.010g/mol  C3H8(g) + 3H20(g) -> 3CO(g) + 7H2(g)…

A: The enthalpy for the reaction between the propane and water is calculated as shown below.…

Q: An automobile engine provides 623 Joules of work to push the pistons. In this process the internal…

A: Given: Work done = 623 Joules Change in internal energy = -2731 Joules

Q: How much heat is released at constant pressure if 12.3 mL of 0.161 M silver nitrate is mixed with…

A: First calculate moles of each reactant by multiply MOLARITY and volume  then find out limiting…

Q: how to write the enthalpy cycle?

A: The previous answer has shown all the necessary calculations and enthalpy changes.  In case you want…

Q: Exothermic reactions release energy in the form of heat and work. At the molecular lever, which does…

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Q: Give examples of instances or activities that require or produce energy. Where this energy came…

A: Please find the answers below.

Q: Use the information and table to answer the following question. A student is planning to determine…

A: Specific heat capacity = (Amount of heat supplied ) / (mass of object) x(increase in temperature)

Q: An automobile engine provides 621 Joules of work to push the pistons. In this process the internal…

A: According to the first law of thermodynamics, the following expression is obtained: ∆U=q+w…

Q: 1. When you add heat energy to a chemical system, what happens to the speed of molecular reactions?…

A: 1.When the temperature is increased, it means that the molecules will move with a higher speed.The…

Q: (ii) the maximum energy that can be made available for work due to the process.

A: Given: Moles of gas = 100 Initial volume = 2m3 Final volume = 5m3 Temperature  = 280 K Constants, a…

Q: Can a chemical reaction ever give off more energy than was originally contained in its reactants?

A: According to law of conservation of energy, energy can neither be created nor be destroyed. It can…

Q: for a reaction that does work and releases heat under constant pressure which will have the larger…

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Q: An automobile engine provides 549 joules of work to push the pistons. In the process the internal…

A:

Q: How many moles of H₂ are required to produce -3001 kJ of heat in the following reaction? N₂ (g) + 3…

A:

Q: The ∆Hfº of MgO is –602 kJ•mol‒1.  When 20.15 g MgO is decomposed at constant pressure according to…

A: Given,ΔHf = -602 KJ/molMass of MgO = 2015 gMolar mass of MgO = 40.3044 g/mol

Q: A combustion reaction released heat at a constant pressure. Which of the following statements is…

A: According to the first law of thermodynamics, the enthalpy change of a system is related by the…

Q: State the law of conservation of energy. How does it relate to energy exchanges between a…

A: For an isolated system, its total energy remains constant. The energy of system will change if it…

Q: Why water has a very high specific heat capacity in comparison to other metals ? Please give a few…

A: Heat capacity:  Heat capacity : This property of a substance is defined the maximum heat that the…

Q: The heat released when one mole of water is formed from the elements is 1,198 kJ. An experiment was…

A: A question based on chemical thermodynamics that is to be accomplished.

Q: Determine the final temperature of a 377 g sample of iron when 2.64 kJ of heat is added. The initial…

A:

Q: A 5.29 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Given information: Mass of unknown sample = 5.29 g Mass of water = 150.00 g Heat gained by solution…

Q: How many moles of H₂ are required to produce -3451 kJ of heat in the following reaction? N₂ (g) + 3…

A: We have given that N2(g) + 3H2(g) -----> 2NH3(g) ∆H = -91.8KJ/mole

Q: A mountain hiker found a chunk of shiny metal on the trail.  He wanted to find out the identity of…

A:

Q: can you explain why energy must initially be consumed in an exothermic chemical reaction?

A: Exothermic reactions are those reactions which release energy in the surroundings due to the…

Q: What is pressure-volume work? How is it calculated?

A: Pressure-volume work is the work which is done by or done on the fluid or gaseous system during…

Q: Write the thermochemical equation for: a. Heat energy of 849.0 kJ is absorbed when 2 mol carbon…

A: Thermodynamics is the branch of chemistry that mainly deals with the heat transfer between system…

Q: 55.69 kJ of work are done by the system, which produces 80.17 kJ of heat. Determine the overall…

A: Work done = 55.69 KJ  Heat = 80.17 KJ Overall change in  internal energy = ?

Q: In order to obtain the largest possible amount of heat from a chemical reaction in which there is a…

A: Endothermic reactions are those reactions where external heat has to be supplied to the reacting…

Q: Use the data in the following image to answer this question. a.The reaction involved the…

A: Given: HCl is the limiting reagent. Moles of HCl =0.0600 mol ΔT =4.75oC Heat capacity = 3.97 J/g…

Q: For an exothermic reaction, how is the measured temperature change affected if some of the heat…

A: Consider that an exothermic reaction is taking place inside a calorimeter with water as its…

Q: 2. A metal sample having a temperature of 100°C and a mass of 45.2 g was placed in 50 g of water…

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Q: Hydrogen gas reacts with oxygen to form water. 2H2(g)+O2(g)-->2H2O(g) the ethalpy of the chemical…

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Q: A system receives 575 J of heat and delivers 425 J of work. Calculate the change in the internal…

A: Given data  The system absorption heat energy= 575 J  The work done by the system = 425 J  Internal…

Q: 1. Calcium carbonate decomposes at high temperatures to form carbon dioxide and calcium oxide: Given…

A: We have given that  Calcium carbonate decomposes at high temperatures to form carbon dioxide and…

Q: An automobile engine provides 617 Joules of work to push the pistons. In this process the internal…

A:

Q: What are some errors in the experiment about the Heat of Dissolution of Salt?…

A: Enthalpies of Solution and DilutionActual changes, like softening or vaporization, and compound…

Q: Consider the combustion of in oxygen gas to produce carbon dioxide gas and water vapor. In an…

A: if 4790J energy absorbed by water that means energy is released by this combustion reaction. And…

Q: What is meant by the term standard conditions with reference to enthalpy changes?

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: 41. If 2 moles of diatomic gas kept at a volume of 20 liters and is compressed from 2 atmospheres of…

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Q: What is a strategy that someone could use if they are not sure about how energy moves between the…

A: There can be this simple strategy which you can use always

Q: An automobile engine provides 585 Joules of work to push the pistons. In this process the internal…

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Q: Explain at the molecular level what happens when a body absorbs heat. 3. What do we call thermal…

A: The process of heat transfer is primarily a molecular process and the state of a body after heat is…

Q: When NaNO2(s) is dissolved in water the process is endothermic.  What happens to the temperature of…

A: The process of the dissolving NaNO2(s) in water is endothermic. The enthalpy change for the…

Q: When 1 mol of a fuel burns at constant pressure, it produces3452 kJ of heat and does 11 kJ of work.…

A: Given, When 1 mol of a fuel burns at constant pressure, it produces 3452 kJ of heat and does 11 kJ…

Q: Consider the accompanying energy diagram. (a) Does thisdiagram represent an increase or decrease in…

A: On the basis of energy change, the chemical reactions can be classified as exothermic and…

Q: An automobile engine provides 572 Joules of work to push the pistons. In this process the internal…

A: