## Internal Energy and heat

$\Delta U=q+w$

Ardo 2K
Posts: 31
Joined: Fri Sep 29, 2017 7:05 am

### Internal Energy and heat

When the temperature of a system doesn't change does the heat equal 0? Or is that just the change in the internal energy of the system?

Danah Albaaj 1I
Posts: 50
Joined: Fri Sep 29, 2017 7:07 am

### Re: Internal Energy and heat

If a system is isothermal we can be positive there is no change in the system's internal energy because of the equation U=3/2nRT. This does not mean that the system could have no change in heat, because if the system is adiabatic as well there would be no change in heat.

Hyein Cha 2I
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Joined: Fri Sep 29, 2017 7:05 am
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### Re: Internal Energy and heat

well since q=m*c*delta T, if delta T=0, q must also equal 0.