- #1

mssca

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This is my very first post... :) I found some help here: https://www.physicsforums.com/showthread.php?t=277092 But I have a difficulty in sloving second and third part

The figure shows(check the link) a thermodynamic process followed by 1.90×10^−2 of hydrogen (link to the graph: http://tiny.cc/c9m0h [Broken]

http://session.masteringphysics.com/problemAsset/1074025/3/knight_Figure_17_65.jpg

I get -50.7J for the work done on the gas which is right... now they want to calculate:

By how much does the thermal energy of the gas change?

AND

How much heat energy is transferred to the gas?

Please help me... I spent hours reading the textbook, but I still don't get it.

Eth=W+Q

pV=nRT

Q=nCdeltaT

By how much does the thermal energy of the gas change? After using above equations and

I get dalta T = 64.15859142 AND I get Eth=-15

For this question "How much heat energy is transferred to the gas?" the heat energy is what?

Please help me.... Thank you

## Homework Statement

The figure shows(check the link) a thermodynamic process followed by 1.90×10^−2 of hydrogen (link to the graph: http://tiny.cc/c9m0h [Broken]

http://session.masteringphysics.com/problemAsset/1074025/3/knight_Figure_17_65.jpg

I get -50.7J for the work done on the gas which is right... now they want to calculate:

By how much does the thermal energy of the gas change?

AND

How much heat energy is transferred to the gas?

Please help me... I spent hours reading the textbook, but I still don't get it.

## Homework Equations

Eth=W+Q

pV=nRT

Q=nCdeltaT

## The Attempt at a Solution

By how much does the thermal energy of the gas change? After using above equations and

I get dalta T = 64.15859142 AND I get Eth=-15

For this question "How much heat energy is transferred to the gas?" the heat energy is what?

Please help me.... Thank you

## Homework Statement

## Homework Equations

## The Attempt at a Solution

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