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# Determine the temperature of the gas at different points

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A heat engine using 130 mg of helium as the working substance follows the cycle show in the figures (attached).

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Please see attached for actual problem.

https://brainmass.com/physics/heat-engines/determine-temperature-gas-different-points-29850

#### Solution Preview

For ideal gas, PV = nRT
Molecular weight of He = 4 g/mol
Weight of He = 130 mg = 0.13g
n = Number of moles of ...

#### Solution Summary

The expert determines the temperature of the gas at different points.

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## Thermodynamic process

See attached diagram.

1. The figure shows a thermodynamic process followed by 150mg of helium.

a) Determine the pressure (in atm) of the gas at points 1, 2, and 3.

p1,p2,p3=________atm

b) Determine the temperature (in celsius) of the gas at points 1, 2, and 3.

T1,T2,T3=________ celsius

c) Determine the volume (in centimeters cubed) of the gas at points 1, 2, and 3.

V1,V2,V3=_________ centimeters cubed

d) How much work is done on the gas during each of the three segments?

W1->2,W2->3,W3->1=_____________ J

e) How much heat energy is transferred to or from the gas during each of the three segments?

Q1->2,Q2->3,Q3->1=______________J

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