When a solid substance changes to a liquid at a constant temperature, th statement that correctly describes this energy change is: * O The potential energy increases, and the kinetic energy remains constant. O The potential energy remains constant, and the kinetic energy increases. O The potential energy decreases, and the kinetic energy decreases. O The potential energy increases, and the kinetic energy decreases.

Q: Which of the following processes is endothermic? O The combustion of propane O The condensation of…

A: A process which is accompanied by absorption of heat energy from the surroundings is known as an…

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 343. kJ during a…

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

Q: The evaporation of water is endothermic:H2O(l) → H2O( g) ∆Hrxn = +44.01 kJWhat minimum mass of water…

A: Determination of no. of mol of H2O that will evaporate from 175 kJ/mol: n=175 kJ44.01 kJ/mol=3.9764…

Q: The specific heat of a substance is the amount of heat required to raise the temperature of one gram…

A: Given, the mass of substance =45.2 graminitial temperature =29.4 °Cfinal temperature =66.8 °Camount…

Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 273. kJ during a…

A: Given :  1. Change in Enthalpy = + 273 kJ  2. Work done = 122 kJ .

Q: Which of the following statements is true?  a When heat is absorbed by a system, the reaction is…

A: Which of the following statements is true ?

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 291. kJ during a…

A:

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 349. kJ during a…

A:

Q: is the amount of heat required to increase the temperature by 1.0 °C of a 1.0 g substance. O…

A:

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 225. kJ during a…

A: a.) To Calculate the change in energy of the gas mixture , we would use first law of thermodynamics.…

Q: (a) Calculate the kinetic energy, in joules of a 1200-kg automobilemoving at 18 m/s. (b) Convert…

A: a) The KE of the above process is given as the formula would be :     Ev=12mv2     we are given…

Q: A chemical equation where heat is tranferrad to the surroundings is ala) exothermic or veaction.…

A: The part of the universe where the reaction takes place is known as the system and the remaining…

Q: iquid water turns to ice. Is this process endothermic or exothermic? Explain what is occurring using…

A: During the course of reaction , if heat is absorbed by the system  than reaction is endothermic . If…

Q: Which of the following will always result in AU > 0? O work done on the system, heat released by the…

A:

Q: Which of the following is an endothermic process? a. work is done by the system on the surroundings…

A: Introduction :  We have to tell which of the following is endothermic process .

Q: What is the difference between kinetic energy and potential energy? Give an example of each type.

A: Kinetic energy is energy possessed by a body by virtue of its movement. It depends on mass and…

Q: Which of the following statements DOES NOT correctly describe an EXOTHERMIC reaction? O q is…

A: Depending upon whether the system absorbs or gives energy during a reaction, the reaction is…

Q: If 427 J of enesgy is indirectly converted to chemical energy, which is then converted to mechanical…

A: According to the law of conservation of energy the, the energy can never be created nor be destroyed…

Q: Thermodynamics is the study of heat and energy. O True False

A: Given: Thermodynamics.  To find : statement is True or false.  Solution : As we know that, There are…

Q: An automobile engine provides 560 Joules of work to push the pistons. In this process the internal…

A: According to the first law of thermodynamics, the energy of the universe remains constant. For a…

Q: Which of these descriptions of heat energy is not correct?a. Heat energy flows between objects that…

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

Q: Which of the following is true    a. when the system absorbs heat, q is positive, the system…

A:

Q: Which Slatement is True? O a. The heat capacity of a substance does not depend on the amount of…

A: extensive properties are the properties which depends upon the amount of the substance , heat…

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

A:

Q: An isolated system is one that O exchanges heat and matter with the surrounds. exchanges neither…

A: answer : selected answer is correct

Q: What is the distinction between temperature and thermal energy is a system?

A:

Q: An automobile engine provides 565 Joules of work to push the pistons. In this process the internal…

A: In this question, we want to determine the amount of heat that must be carried away by the cooling…

Q: An automobile engine provides 501 Joules of work to push the pistons. In this process the internal…

A: According to the first law of thermodynamics: ∆U=Q + W where, ∆U=Change in internal energy Q= Heat…

Q: what are some examples of potential energy?

A: Potential energy is the energy held by an object because of its position relative to other objects,…

Q: Which of the following processes always results in an increase in the energy of a system? O The…

A: Which of the following processes always results in an increases in the energy of a system has to be…

Q: interconversion of energy between two forms: heat alu 13. The First Law of Thermodynamics states…

A: 13.  The First Law of Thermodynamics states that energy can be created or destroyed. Answer :  The…

Q: What is the definition of enthalpy? O a. Heat flow in a chemical reaction at constant temperature O…

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

Q: What sum determines the change in energy of a system? O heat released and work performed O heat…

A: A process in which heat energy is transferred from a system to the surroundings is referred as…

Q: I. Matching Type 1. energy at motion a. Potential energy b. Second law of 2. Energy is neither…

A:

Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 140. kJ during a…

A: Enthalpy of a mixture of gaseous reactants increases by 140. KJ  It means enthalpy change (∆H) = +…

Q: What type of energy flows naturally from a hot object to a cooler object? A light energy B…

A:

Q: 1. A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and is temperature changes from…

A: Since you have posted multiple questions, we will solve only the first question for you according to…

Q: Which of the following equations is a mathematical definition of enthalpy? Ο ΔΗ- ΔΕ-ΡAV Ο ΔΗ-ΔΕ +…

A: Amount or quantity of heat absorbed or released during a thermodynamic process at a fixed value of…

Q: 1.) How is energy expressed in measurements? 2) Distinguish between heat capacity and specific heat…

A: How the energy expressed in measurements has to be given.

Q: Objects can possess energy as ________. (a) endothermic energy (b) potential energy (c) kinetic…

A: There is no such thing as endothermic energy. However there are endothermic reaction in which heat…

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 160. kJ during a…

A:

Q: Which statements are true? A combustion reaction is exothermic. When energy is transferred as heat…

A:

Q: To study the possible amount of energy generated by a person, the person can be roughly viewed as a…

A:

Q: Al chan 4. A book held 1 meter above the floor has potential energy. The book is dropped and hits…

A:

Q: How do heat capacity and specific heat differ? Explain by selecting all true statements. Heat…

A: The solution is given below -

Q: Moving an object some distance against an opposing force is known as Oforce O energy O work O…

A: This question is related to dimensional analysis of chemistry. Dimensional analysis is the analysis…

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: As the caterpillar climbs, its potential energy is increasing, what source of energy has been used…

A: As the Caterpillar climbs, the potential energy is increasing. The energy source that has been used…

Q: During an energy exchange, a chemical system absorbs energy from its surroundings. What is the sign…

A: