U


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EthanPham_1G
Posts: 104
Joined: Sat Jul 20, 2019 12:17 am

U

Postby EthanPham_1G » Sun Feb 02, 2020 7:27 pm

What is internal energy? How would you solve for it if you know delta H?

KarineKim2L
Posts: 100
Joined: Fri Aug 30, 2019 12:16 am

Re: U

Postby KarineKim2L » Sun Feb 02, 2020 7:34 pm

Internal energy is the energy contained within a system. Typically we are asked to find the change in U, internal energy, which we can do by using the equation Change in U= Delta H - Pressure Delta Volume.

Prasanna Padmanabham 4I
Posts: 111
Joined: Thu Jul 25, 2019 12:17 am

Re: U

Postby Prasanna Padmanabham 4I » Sun Feb 02, 2020 8:06 pm

You should watch this video for an introduction to internal energy and U

https://www.khanacademy.org/science/physics/thermodynamics/laws-of-thermodynamics/v/more-on-internal-energy

Cole Woulbroun 1J
Posts: 56
Joined: Thu Jul 25, 2019 12:16 am

Re: U

Postby Cole Woulbroun 1J » Sun Feb 02, 2020 8:14 pm

Internal energy is the energy within a system. You can solve for the change of internal energy with the equation dU = dH + PdV. In this equation, where d stands for delta, dH represents the change in heat energy of the system while PdV represents the work either done on the system or done by the system. Because of this relationship, it is synonymous to the equation dU = q + w.

Rhea Shah 2F
Posts: 97
Joined: Thu Jul 25, 2019 12:17 am

Re: U

Postby Rhea Shah 2F » Sun Feb 02, 2020 9:36 pm

Internal energy is the energy necessary to create or prepare the state of the system, and is calculate by taking H (the enthalpy) and subtracting the pressure times the change in volume of the system.


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