## Delta U = 0

$\Delta U=q+w$

romina_4C
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### Delta U = 0

What are the specific cases when delta U = 0?

Baoying Li 1B
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### Re: Delta U = 0

Delta U = 0 for ideal gas when the process is isothermal since the change of internal energy depends on the change of temperature.

Matthew Tsai 2H
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### Re: Delta U = 0

Any time there is no change in temperature, delta U is zero.

Veronica_Lubera_2A
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### Re: Delta U = 0

And when Delta U=0 then q=-w.

Anika Chakrabarti 1A
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### Re: Delta U = 0

Delta U = 0 for reversible processes, since any work done is replaced by an equal amount of heat (q = -w)

Caitlyn Tran 2E
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Joined: Fri Aug 09, 2019 12:15 am

### Re: Delta U = 0

Another way you could think of this is using the equation $U = \frac{3}{2}nRT$ that is on our equation sheet. You can also write this equation as $\Delta U = \frac{3}{2}nR\Delta T$, so if an environment is isothermal (meaning that delta T is 0), then delta U would also be 0. Hope this helps!

Callum Guo 1H
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### Re: Delta U = 0

for an isothermal process

Jacob Motawakel
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### Re: Delta U = 0

delta U is zero at constant temperature

Juana Abana 1G
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Joined: Wed Sep 18, 2019 12:15 am

### Re: Delta U = 0

Delta U is zero when there is no change in temperature.