Dealing with isothermal lines. How would you go about proving if the two lines are parallel if no values are given for the Pressure or the Volume?(adsbygoogle = window.adsbygoogle || []).push({});

This is what I've got so far:

Q = -W

dU = 0, where U is internal energy.

P1V1 = nRT

P2V2 = nRT

P1V1=P2V2

Or:

P1/P2 = nRT1 / nRT2

The problem is I don't know how to start showing that the lines don't cross, i.e. the slopes are the same. Any help is greatly appreciated. Thank you.

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# Thermodynamic Question

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