internal energy

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Kyle Rex 1K
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Joined: Sat Aug 17, 2019 12:16 am

internal energy

Postby Kyle Rex 1K » Wed Jan 29, 2020 10:45 pm

When calculating internal energy changes, is that the deltaU equation or q?

AKhanna_3H
Posts: 104
Joined: Wed Sep 18, 2019 12:19 am

Re: internal energy

Postby AKhanna_3H » Wed Jan 29, 2020 10:46 pm

Internal energy is represented by delta U. Q represents the heat entering or exiting the system.

Uisa_Manumaleuna_3E
Posts: 60
Joined: Wed Sep 21, 2016 2:56 pm

Re: internal energy

Postby Uisa_Manumaleuna_3E » Thu Jan 30, 2020 7:34 pm

Yup, internal energy is the delta u = q + w. just remember, if the reaction has a constant volume, then no expansion work is done, and delta u is equal to q subscript v.

Hailey Kim 4G
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Joined: Sat Jul 20, 2019 12:16 am

Re: internal energy

Postby Hailey Kim 4G » Thu Jan 30, 2020 7:51 pm

The change in internal energy is represented by delta(U). Delta(U) is equal to the energy transferred by heating (q) + the energy transferred by compression (w).

delta U = q + w

Ying Yan 1F
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Joined: Fri Aug 02, 2019 12:16 am

Re: internal energy

Postby Ying Yan 1F » Fri Jan 31, 2020 9:53 pm

The equation for calculating internal energy is u= q + w.

CynthiaLy4F
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Joined: Sat Jul 20, 2019 12:16 am

Re: internal energy

Postby CynthiaLy4F » Fri Jan 31, 2020 10:08 pm

Calculating internal energy corresponds to the deltaU equation, where deltaU = q + w.

HuyHa_2H
Posts: 100
Joined: Wed Sep 11, 2019 12:15 am

Re: internal energy

Postby HuyHa_2H » Sat Feb 01, 2020 2:30 am

Delta U is the internal energy. Q represents heat. Utilizing the two is through the equation: Delta U = q + w where w is the net work.

AniP_2D
Posts: 95
Joined: Sat Aug 17, 2019 12:17 am

Re: internal energy

Postby AniP_2D » Sun Feb 02, 2020 1:57 pm

The equation you use for internal energy is deltaU=q+w.

Frank He 4G
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Joined: Tue Nov 12, 2019 12:19 am

Re: internal energy

Postby Frank He 4G » Sun Feb 02, 2020 2:49 pm

Hailey Kim 4G wrote:The change in internal energy is represented by delta(U). Delta(U) is equal to the energy transferred by heating (q) + the energy transferred by compression (w).

delta U = q + w


This is good to note. Delta U is importantly not just internal energy but the change in internal energy. We are calculating the change, rather than the actual total internal energy of an entire system.

kristi le 2F
Posts: 102
Joined: Thu Jul 11, 2019 12:15 am

Re: internal energy

Postby kristi le 2F » Sun Feb 02, 2020 10:36 pm

Also, heat and work are equivalent means of energy transfer and are the only to change the internal energy of a system.

RichBollini4G
Posts: 100
Joined: Wed Sep 18, 2019 12:18 am

Re: internal energy

Postby RichBollini4G » Tue Feb 04, 2020 2:29 pm

AKhanna_3H wrote:Internal energy is represented by delta U. Q represents the heat entering or exiting the system.

Thank you

AveryAgosto
Posts: 76
Joined: Wed Sep 18, 2019 12:16 am

Re: internal energy

Postby AveryAgosto » Tue Feb 04, 2020 2:39 pm

Internal energy is found using the delta U equation which will contain q.


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