How much heat energy is transferred to or from the gas

AI Thread Summary
The discussion focuses on calculating heat energy transfer and changes in thermal energy for a monatomic gas during specific processes. Participants inquire about the heat energy transferred during processes 1 to 2 and 2 to 3, as well as the total change in thermal energy. The relationship between pressure, volume, and heat energy is clarified using the ideal gas law and the first law of thermodynamics. The change in internal energy is expressed as ΔU = nC_vΔT, with a need to determine the specific heat capacity C_v for a monatomic gas. Overall, the conversation emphasizes the application of thermodynamic principles to analyze gas behavior in different processes.
Meteo
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0.250 mol of a monatomic gas follows the process shown in the figure.
attachment.php?attachmentid=5591&stc=1&d=1132268995.jpg


How much heat energy is transferred to or from the gas during process 1 to 2?

How much heat energy is transferred to or from the gas during process 2 to 3?

What is the total change in thermal energy of the gas?

I am not sure how to relate pressure and volume to heat energy.

I have pV=nRT and \Delta E_{th}=W+Q

Also for the third question. would I just subtract the energy at point 3 from the energy at
point 1?
 

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Meteo said:
0.250 mol of a monatomic gas follows the process shown in the figure.
attachment.php?attachmentid=5591&stc=1&d=1132268995.jpg

How much heat energy is transferred to or from the gas during process 1 to 2?
How much heat energy is transferred to or from the gas during process 2 to 3?
What is the total change in thermal energy of the gas?
I am not sure how to relate pressure and volume to heat energy.
I have pV=nRT and \DeltaE_th=W+Q
Also for the third question. would I just subtract the energy at point 3 from the energy at point 1?

The change in internal (thermal) energy of the gas is:

\Delta U = nC_v\Delta T = \Delta Q + W where W is the work done to the gas (use -W if W is the work done by the gas).

What is C_v for an ideal monatomic gas?

AM
 

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