4B.3


Moderators: Chem_Mod, Chem_Admin

Charisse Vu 1H
Posts: 101
Joined: Thu Jul 25, 2019 12:17 am

4B.3

Postby Charisse Vu 1H » Sat Feb 08, 2020 3:06 pm

4B.3: The internal energy of a system increased by 982 J when it was supplied with 492 J of energy as heat. (a) Was work done by or on the system? (b) How much work was done?

I understand that work was done on the system for the internal energy to be increased by 982 J, but I don't understand why the textbook says that the solution for part b is 90*10^2 J. Wouldn't it just be 982J-492J? (delta U = q + w)

Chem_Mod
Posts: 18400
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 435 times

Re: 4B.3

Postby Chem_Mod » Sat Feb 08, 2020 5:55 pm

I believe you are correct; I am not sure why the solutions would say 9000 J


Return to “Concepts & Calculations Using First Law of Thermodynamics”

Who is online

Users browsing this forum: No registered users and 1 guest