## What Does U and q stand for?

charlotte_jacobs_4I
Posts: 63
Joined: Fri Sep 28, 2018 12:29 am

### What Does U and q stand for?

In many of the problems in the homework there were equations with U and q. What do these variables stand for?

Chem_Mod
Posts: 17949
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 406 times

### Re: What Does U and q stand for?

U is the internal energy and q is the heat transfer

Jeannine 1I
Posts: 73
Joined: Fri Sep 28, 2018 12:27 am

### Re: What Does U and q stand for?

$\Delta U$ is the overall change in internal energy of a system, and q is heat!

Cynthia Aragon 1B
Posts: 47
Joined: Mon Apr 09, 2018 1:38 pm

### Re: What Does U and q stand for?

The first law of thermodynamics: Delta U= Q + W states that the change in internal energy of a system (Delta U) equals the net heat transfer into the system Q, plus the net work done on the system W.

ΔU: change in internal energy U of the system.
Q : net heat transferred into the system
Q: the sum of all heat transfer into and out of the system.

Millicent Navarro 1I
Posts: 61
Joined: Fri Sep 28, 2018 12:25 am

### Re: What Does U and q stand for?

ΔU = q+w

ΔU = Internal Energy
q = Net heat transfer in the system
w = Work being done in the system
Last edited by Millicent Navarro 1I on Fri Feb 01, 2019 1:23 am, edited 1 time in total.

Douglas Nguyen 2J
Posts: 71
Joined: Fri Sep 28, 2018 12:15 am

### Re: What Does U and q stand for?

Delta U signifies the change in internal energy.
q refers to the energy transferred by heating.
w is the energy transferred by compression.

yuetao4k
Posts: 60
Joined: Fri Sep 28, 2018 12:27 am
Been upvoted: 1 time

### Re: What Does U and q stand for?

delta U is internal energy and q is the heat.

Rhay Flores 4K
Posts: 11
Joined: Fri Sep 29, 2017 7:04 am

### Re: What Does U and q stand for?

U represents internal energy while q represents heat.

KHuang1L
Posts: 60
Joined: Fri Sep 28, 2018 12:19 am

### Re: What Does U and q stand for?

U is internal energy and q is heat

005113695
Posts: 59
Joined: Fri Sep 28, 2018 12:15 am

### Re: What Does U and q stand for?

U is the internal energy while q is the internal heat.