What do you mean by Enthalpy and Entropy ?

Q: What are the signs for q and w to represent a system that's doing work on the surroundings, and…

A: “The relationship between heat with other forms of energy like light, mechanical work is studied…

Q: State the first law of thermodynamics in terms of (a) the energy of the universe; (b) the creation…

A: The first law of thermodynamics has to be stated,

Q: what is the heat evolved

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Q: 10. Explain enthalpy, entropy, and internal energy.

A: Enthalpy:-Enthalpy is the measurement of energy in a thermodynamic system. The quantity of enthalpy…

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

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Q: Using the Table of Thermodynamic Values, determine the change in enthalpy

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Q: What is heat capacity? Explain the difference between heat capacity and specific heat capacity.

A: The expression for the amount of heat transferred is as follows,…

Q: How do I find heat absorbed by a calorimeter alone, and also heat absorbed by the conents of the…

A: The amount of heat or energy released or gained during the process is measured by using calorimeter.

Q: What is internal energy? Is internal energy a state function?

A: Energy is the capacity of doing work. It is transferred from one object to other.

Q: state and explain the first law of thermodynamics.

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Q: Define calorimetry and describe two commonly used calorimeters. In a calorimetric measurement, why…

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Q: Calculate the heat capacity of your calorimeter. Note that the temperature change of the…

A: Given:Temperature change is same as in cool water.

Q: d enthalpy

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Q: One statement of the first law of thermodynamics is that pick one the amount of work done on a…

A: The first law of thermodynamics is basically the conservation of energy. It stats that the total…

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: Why heat capacity is so important in our everyday life? please give an examples.

A: Heat capacity is the amount of heat required in Joules by one gram of substance to raise its…

Q: What are the two main components of the internal energy of a substance? On what are they based?

A: The two main components of the internal energy of a substance has to be given.

Q: What is meant by the specific heat capacity of an object

A: To define the specific heat capacity of an object.

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: What general rule can you propose about the heat content of the fuels by their length of carbon…

A: Heat content of a fuel is the amount of energy released on combustion of the fuel.

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

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Q: What is the first law of thermodynamics and how does it relate to energy use?<

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Q: Explain what is first law of thermodynamics. How it is related to the conservation of energy?

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Q: State the second law of thermodynamics. How does the second law explain why heat travels from a…

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Q: Which has the sign for the enthalpy change different to the other three?

A: Enthalpy change is defined as the heat that passes into or out of the system during a chemical…

Q: Is internal energy a state function?

A: Energy is the capability of doing work.

Q: What is nature’s “heat tax” and how does it relate to energy use?

A: According to first law of thermodynamics the change in internal energy is equal to the heat absorbed…

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: Distinguish between energy and entropy

A: Energy is the ability to do work or produce heat. The law of conservation of energy says that the…

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: When measuring the enthalpy of combustion of a very small amount of material, would you prefer to…

A: The amount of heat that is absorbed by calorimeter is given as follows: Here, c is the heat…

Q: e standard molar enthalpy

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Q: State the second law of thermodynamics. How does the second law explain why heat travels from a…

A: To be precise second law of thermodynamics is about entropy, it states that the entropy of an…

Q: of enthalpy

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Q: An automobile engine provides 623 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: What is FALSE regarding the laws of thermodynamics? Select one: a. Energy can be neither created nor…

A: Temperature, energy, and entropy are only a few of the physical parameters that the rules of…

Q: How do I calculate enthalpy of state changes?

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Q: The second law of thermodynamics states

A: Thermodynamics is the branch of chemistry which helps to indicate the feasibility of a chemical…

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: An automobile engine provides 633 Joules of work to push the pistons. In this process the internal…

A: From first law of thermodynamics, we know :  ∆U = q + w Where ∆U = Change in internal energy. q =…

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

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Q: How much heat is produced by combustion of 125 g of methanol under standard state conditions?

A: Given: Mass of methanol(CH3OH) = 125 g ΔH = -764 KJ/mol Molar mass of CH3OH = 32.04 g/mol

Q: enthalpy

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Q: Why the heat capacity of the calorimeter is an important number to determine?

A: Calorimeters are commonly used instruments for the measurement of enthalpy change of reactions. On…

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.