Isolated System Energy Change

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Vivian Chen 3A
Posts: 10
Joined: Fri Sep 26, 2014 2:02 pm

Isolated System Energy Change

Postby Vivian Chen 3A » Tue Mar 03, 2015 4:40 pm

If an isolated system has +15kJ, after a certain amount of time, how much energy would the system have? Would the amount of energy remain constant?

Neil DSilva 1L
Posts: 70
Joined: Fri Sep 26, 2014 2:02 pm

Re: Isolated System Energy Change

Postby Neil DSilva 1L » Tue Mar 03, 2015 11:40 pm

By definition, energy and matter cannot be transferred into/out of an isolated system, so whatever energy is in the system remains constant. Therefore, if an isolated system has +15 kJ of energy at some point in time, it will have +15kJ at any other time. Yes, the amount of energy would remain constant and (change in interal energy is 0).

Chem_Mod
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Re: Isolated System Energy Change

Postby Chem_Mod » Thu Mar 05, 2015 9:22 pm

Yes, Neil's explanation is spot on.


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