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Postby 005391550 » Mon Feb 10, 2020 5:56 pm

how do you calculate the enthalpy at constant volume?

Brian Tangsombatvisit 1C
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Re: 4C.3b

Postby Brian Tangsombatvisit 1C » Mon Feb 10, 2020 5:58 pm

for a system at constant volume, there is no work being done since this cancels out the term. therefore, the internal energy equals heat, which is q (U=q). The equation for enthalpy is H = U + PV, so in order to find enthalpy, you would plug in q for U and nRT for PV if you are given moles and temperature instead of pressure and volume

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