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Old 04-18-2008, 01:54 AM
aslan649 aslan649 is offline
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Using ?E = q + w describe the sign convention (chemistry)?

Which gives the sign convention for this relationsip that is usually used in chemistry?
heat q added to| heat q added |work, w done|work, w done
the system | to the surroundings|to system |to surrounding

a) -+--
b) + + + +
c) + + + -
d) + - + -
e) + - - -

If you could could you also explain to me what exactly ?E is and how I find the work and heat of the system.... or at least theoretically realize what they are asking. Thanks.
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