1. Heat is best defined as massless substance emitted when something burns. a form of potential energy. a form of work. the total energy that a substance has. energy transferred as the result of a temperature difference.

Q: How much heat is evolved

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: If the mass of a truck is tripled-for example, when it is loaded-by what factor does the kinetic…

A: The mass of the truck is tripled then the kinetic energy will be, From the equation, KE=12mv2where,…

Q: A student is using calorimetry to determine the heat of solution for various salts. When the student…

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Q: What happens to the energy of the system during a chemical reaction? *   A. The energy of the system…

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Q: A student mixed sodium carbonate and calcium chloride in a test tube. A white solid appeared…

A: Given reactant  Sodium carbonate  Calcium chloride Product  To be determined

Q: An automobile engine provides 519 Joules of work to push the pistons. In this process the internal…

A: According to first law of thermodynamics , the relationship between change in internal energy , heat…

Q: Combustion of hydrocarbons such as propane (C,Hg) produces carbon dioxide, a "greenhouse gas."…

A: Burning of Compound in presence of oxygen is called Combustion and products are CO2 gas and H2O…

Q: :An endothermic reaction causes the surroundings to

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Q: What happens when Ethanol burns and what happens after it burns? What happens to the matter in…

A: Ethanol is a chemical substance made up of carbon, hydrogen and oxygen atoms. The chemical formula…

Q: What is potential energy? the energy of an object in motion O the energy stored due to an object's…

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Q: Chemical changes are caused by an input in energy. In physical changes, there is no transfer of…

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Q: Section 1: Nuclear Energy What types of reactions occur in a nuclear power plant? Is the process…

A: A nuclear reaction involves fission or fusion reaction. If two light nuclei combines to form a…

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: The First Law of Thermodynamics tells us A) that the energy of the universe is always increasing. B)…

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Q: Which term is not correctly matched? botue (a) endothermic - energy is absorbed (b) exothermic –…

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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: It refers to the amount of energy required to transform liquid water to gas

A: Given,  It refers to the amount of energy required to transform liquid water to gas

Q: UNKNOWN METAL DATA: mass of unknown metal = 50.0g %3D initial temperature of unknown metal = 130-0C…

A: We are given mass of unknown metal(mw )=50.0 gminitial temperature(Tui)=130°Cmass of water in…

Q: Thermal energy is: A form of kinetic energy. A form of potential energy. Consists of both potential…

A: Thermal energy is: A form of kinetic energy. A form of potential energy. Consists of both potential…

Q: What is the best choice: The First Law of Thermodynamics tells us? A) That a chemical reaction…

A: The First Law of Thermodynamics states that: ∆U=q+W where ∆U is the internal energy change, q is the…

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

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Q: (a) Mass of the Calorimeter (two empty cups) in g: 4.0g (b) Mass of the cold water and the…

A: Given data:

Q: What is meant by the term heat of reaction? What other name is a synonym for this term?

A: 1.The Heat of Reaction is the change in the enthalpy of a chemical reaction that occurs at a…

Q: What happens to the temperature of a material as it undergoes an endothermic phase change? If heat…

A: Endothermic process: A process in that heat is absorbed by the system is called as endothermic…

Q: An automobile engine provides 628 Joules of work to push the pistons. In this process the internal…

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Q: Which term is not correctly matched? endothermic - energy is absorbed universe - system plus…

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Q: A scientist wants to perform a reaction in a vacuum chamber to control the experiment as much as…

A: Answer - According to the question - Given - Endothermic reaction -  An endothermic process is the…

Q: If energy is absorbed by the reaction that is taking place, where will the heat be absorbed from?…

A: In such calorimeter, amount of heat released in the reaction or used up in the reaction is…

Q: What is a state function? List some examples of state functions.

A: Introduction: State function and Path function: Thermodynamic parameters whose value depends only on…

Q: w can you consider heat as a reaction component?     Heat is always a product.     Heat is a…

A: Here we have to tell how heat can be considered as reaction component.

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: A helium-filled balloon spontaneously deflates overnight as He atoms diffuse through the wall of the…

A: According to the first law of thermodynamics, There has no change in the system's internal energy as…

Q: A student modeled the exothermic synthesis reaction that occurs when solid iron and liquid sulfur…

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Q: student is planning to determine the specific heat capacity of iron. To do this experiment the…

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Q: What area of study in chemistry is concerned with the heat transfers that occur during chemical…

A: Thermodynamics is one of the topic of science which is in physics as well as chemistry.

Q: When two solutions are combined in a test tube, they quickly react and the test tube containing the…

A: To know about the type of Chemical Reaction, know the meaning of exothermic and endothermic…

Q: elect the ???? description about the second law of thermodynamics. *       A. Measure of the…

A: Second law of thermodynamics is given because as per first law energy can be converted from one form…

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

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Q: Suppose object A has quadruple the specific heat and double the mass of object B. If the same amount…

A: Using Q = m.c.∆T for B  Q = m.c.∆T  Now use it for A  Q = 2m.4c.∆T' Now, divide both  1 = ∆T / 8∆T'…

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: The Law of Conservation of Energy states, when applied to Calorimetry, states that heat is neither…

A: Answer The low of conservation of energy :- The total…

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

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Q: A student makes the following statement: The energy required to break the bonds in the reactants is…

A: The energy required to break the bonds in the reactants is less than the energy released in the…

Q: When solid calcium hydroxide reacts with hydrochloric acid in water, dissolved calcium chloride…

A: When solid calcium hydroxide Ca(OH)2 reacts with hydrochloric acid HCl then a dissolved precipitate…

Q: Which statement is true of a chemical change? A. Heat is always exchanged between the system and…

A: Thermodynamics is the branch of chemistry in which we deals for the change in energy or heat, work…

Q: 4ab] a. Calculate the mass of calcium and magnesium in the original sample. b. Calculate for the…

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Q: Compare balls A and B in terms of potential energy in both the initial and final setups. * -Held in…

A: Given,