(a) Interpretation: For the closed-system, the energy balance equation is to be simplified. Concept introduction: The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics , the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

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Answer 1

Question

Chapter 7, Problem 7.12P

Interpretation Introduction

(a)

Interpretation:

For the closed-system, the energy balance equation is to be simplified.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Interpretation Introduction

(b)

Interpretation:

The amount of heat that is transferred to or from the surroundings is to be calculated.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Interpretation Introduction

(c)

Interpretation:

Whether the temperature of the final system is greater than, equal to, or less than 30 οC is to be predicted.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

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The gas A(g) (1 mole) undergoes a two-step process one after another as described below :i) The gas is expanded at 25°C and from 1 bar pressure against a constant pressure of 0.2 bar and the final volume of the gas is the twice the initial volume.ii) The gas is cooled down to -25°C at constant volume.Cv,m = 3/2 RCalculate ΔU, ΔH, q and w for the each step and for the entire process

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Answer 2

Question

Chapter 7, Problem 7.12P

Interpretation Introduction

(a)

Interpretation:

For the closed-system, the energy balance equation is to be simplified.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Interpretation Introduction

(b)

Interpretation:

The amount of heat that is transferred to or from the surroundings is to be calculated.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Interpretation Introduction

(c)

Interpretation:

Whether the temperature of the final system is greater than, equal to, or less than 30 οC is to be predicted.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

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Answer 3

Question

Chapter 7, Problem 7.12P

Interpretation Introduction

(a)

Interpretation:

For the closed-system, the energy balance equation is to be simplified.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Interpretation Introduction

(b)

Interpretation:

The amount of heat that is transferred to or from the surroundings is to be calculated.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Interpretation Introduction

(c)

Interpretation:

Whether the temperature of the final system is greater than, equal to, or less than 30 οC is to be predicted.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

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Answer 4

Question

Chapter 7, Problem 7.12P

Interpretation Introduction

(a)

Interpretation:

For the closed-system, the energy balance equation is to be simplified.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Interpretation Introduction

(b)

Interpretation:

The amount of heat that is transferred to or from the surroundings is to be calculated.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Interpretation Introduction

(c)

Interpretation:

Whether the temperature of the final system is greater than, equal to, or less than 30 οC is to be predicted.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

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Answer 5

Chapter 7, Problem 7.12P

Interpretation Introduction

(a)

Interpretation:

For the closed-system, the energy balance equation is to be simplified.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Interpretation Introduction

(b)

Interpretation:

The amount of heat that is transferred to or from the surroundings is to be calculated.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Interpretation Introduction

(c)

Interpretation:

Whether the temperature of the final system is greater than, equal to, or less than 30 οC is to be predicted.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Answer 6

Chapter 7, Problem 7.12P

Interpretation Introduction

(a)

Interpretation:

For the closed-system, the energy balance equation is to be simplified.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Answer 7

Chapter 7, Problem 7.12P

Interpretation Introduction

(a)

Interpretation:

For the closed-system, the energy balance equation is to be simplified.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The amount of heat that is transferred to or from the surroundings is to be calculated.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The amount of heat that is transferred to or from the surroundings is to be calculated.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Answer 10

Interpretation Introduction

(c)

Interpretation:

Whether the temperature of the final system is greater than, equal to, or less than 30 οC is to be predicted.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Answer 11

Interpretation Introduction

(c)

Interpretation:

Whether the temperature of the final system is greater than, equal to, or less than 30 οC is to be predicted.

Concept introduction:

The internal energy is the total energy present in the system. In simple words, it is the sum of the kinetic and potential energy of the particles in the system. According to the first law of thermodynamics, the energy of a system is conserved. It is only transferred from one state to another that is from system to surroundings and vice versa.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 7 - A certain gasoline engine has an efficiency of...Ch. 7 - Prob. 7.2P Ch. 7 - Prob. 7.3P Ch. 7 - Prob. 7.4P Ch. 7 - Liquid ethanol is pumped from a large storage tank...Ch. 7 - Air at 300°C and 130 kPa flows through a...Ch. 7 - Prob. 7.7P Ch. 7 - Prob. 7.8P Ch. 7 - Prob. 7.9P Ch. 7 - Prob. 7.10P

Solution Summary: The author explains the energy balance equation for the closed-system. The internal energy is the sum of kinetic and potential energy of the particles in the system.

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