Homework Help: q, w, and DU

Posted by Raymonddd on Friday, June 12, 2009 at 12:44am.

A gas is allowed to expand at constant temperature from a volume of 2.00 L to 11.20 L against an external pressure of 1.500 atm. If the gas loses 256 J of heat to the surroundings, what are the values of q, w, and DU? Pay careful attention to units.

a. -256 J, +838 J, +1094 J
b. +256 J, -1398 J, -1142 J
c. -256 J, -1398 J, -1654 J
d. +256 J, +1398 J, +1654 J
e. -256 J, -419 J, -547 J

Science (chem?) - Writeacher, Friday, June 12, 2009 at 10:26am
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q, w, and DU - hodhod, Friday, June 11, 2010 at 10:45am
A gas is allowed to expand at constant temperature from a volume of 2.00 L to 11.20 L against an external pressure of 1.500 atm. If the gas loses 256 J of heat to the surroundings, what are the values of q, w, and DU? Pay careful attention to units.
q, w, and DU - mina, Sunday, October 9, 2011 at 12:24pm
mina
q=-256 J
w=-1398 J
DU=-1654 J

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