Delta U

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Shannon Asay 1C
Posts: 102
Joined: Fri Aug 09, 2019 12:16 am

Delta U

Postby Shannon Asay 1C » Tue Jan 28, 2020 1:34 pm

What does delta u stand for and how do you calculate for it?

Brittney Hun 2C
Posts: 104
Joined: Wed Sep 11, 2019 12:15 am

Re: Delta U

Postby Brittney Hun 2C » Tue Jan 28, 2020 2:49 pm

Delta U stands for the change in internal energy of the system. Delta u = q (heat) + w(work). The units are in joules!

Eunice Nguyen 4I
Posts: 100
Joined: Sat Aug 17, 2019 12:17 am

Re: Delta U

Postby Eunice Nguyen 4I » Tue Jan 28, 2020 10:34 pm

delta U is the change in internal energy
You calculate it with delta U = q+w, where q = heat and w = work.

Subashni Rajiv 1K
Posts: 101
Joined: Wed Sep 18, 2019 12:16 am

Re: Delta U

Postby Subashni Rajiv 1K » Tue Jan 28, 2020 11:00 pm

Another popular unit the book uses for delta U or internal energy is kilojoules (kJ).

Daniel Toscano 1L
Posts: 95
Joined: Tue Nov 13, 2018 12:18 am

Re: Delta U

Postby Daniel Toscano 1L » Tue Jan 28, 2020 11:04 pm

Also, make sure to include the sign unless specified not to.

Brooke Yasuda 2J
Posts: 102
Joined: Sat Jul 20, 2019 12:17 am

Re: Delta U

Postby Brooke Yasuda 2J » Wed Jan 29, 2020 1:04 am

When there is no expansion or compression, which is work, we can say that Delta U is equal to the q value.

gabbymaraziti
Posts: 111
Joined: Wed Sep 18, 2019 12:19 am

Re: Delta U

Postby gabbymaraziti » Wed Jan 29, 2020 7:19 pm

Delta U is the internal energy of the system/reaction, or the total store of energy in a system. One way delta U can be calculated is by subtracting the internal energy of the initial system from the internal energy of the final system.


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