A sample of gas is compressed by an average pressure of 0.50 bar so as to d ecrease its volume from 450 cm 3 to 250 cm 3 . During the process 6.00 J of heat flows out to surroundings. Calculate the change in internal energy of the system. - Wired Faculty

Thermodynamics

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A sample of gas is compressed by an average pressure of 0.50 bar so as to decrease its volume from 450 cm³ to 250 cm³. During the process 6.00 J of heat flows out to surroundings. Calculate the change in internal energy of the system.

Solution

increment straight V space equals space 250 minus space 450 space equals space minus 200 space cm cubed space equals space 0.2 space straight L

External pressure (P) = 0.5 bar

therefore space space space space space space straight w space equals space minus straight P increment straight V space equals space minus 0.50 space cross times space left parenthesis 0.2 right parenthesis

= 0.1 L bar
Now, 1 L-bar = 101.3 J

therefore space space space space space space straight w space equals space 0.1 space cross times space 101.3 space equals space 10.13 space straight J space space space space space space space space space straight q space equals space space minus 6.00 space straight J

Some More Questions From Thermodynamics Chapter

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Thermodynamics

A sample of gas is compressed by an average pressure of 0.50 bar so as to decrease its volume from 450 cm³ to 250 cm³. During the process 6.00 J of heat flows out to surroundings. Calculate the change in internal energy of the system.

Some More Questions From Thermodynamics Chapter

Define thermodynamics.

What do you understand by the terms: the system and surroundings?

Classify the following into different types of systems:
(i) Tea placed in a cup
(ii) Tea placed in a tea-pot
(iii) Tea placed in a thermosflask.

Define a closed system.

Define an isolated system.

Define intensive properties.

Define extensive properties.

Why all living systems need to be 'open systems'?

Define state variables of a system.

From thermodynamic point of view, to which system the animals and plants belong?

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For Daily Free Study Material Join wiredfaculty

Thermodynamics

A sample of gas is compressed by an average pressure of 0.50 bar so as to decrease its volume from 450 cm3 to 250 cm3. During the process 6.00 J of heat flows out to surroundings. Calculate the change in internal energy of the system.

Some More Questions From Thermodynamics Chapter

Define thermodynamics.

What do you understand by the terms: the system and surroundings?

Classify the following into different types of systems:(i) Tea placed in a cup(ii) Tea placed in a tea-pot(iii) Tea placed in a thermosflask.

Define a closed system.

Define an isolated system.

Define intensive properties.

Define extensive properties.

Why all living systems need to be 'open systems'?

Define state variables of a system.

From thermodynamic point of view, to which system the animals and plants belong?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

A sample of gas is compressed by an average pressure of 0.50 bar so as to decrease its volume from 450 cm³ to 250 cm³. During the process 6.00 J of heat flows out to surroundings. Calculate the change in internal energy of the system.

Classify the following into different types of systems:
(i) Tea placed in a cup
(ii) Tea placed in a tea-pot
(iii) Tea placed in a thermosflask.