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September 21, 2014

Homework Help: Chemistry

Posted by Anonymous on Tuesday, October 9, 2012 at 11:04pm.

Which of the following substances have a standard heat of formation (ÄHf°) of zero?

O2(g) at 25.0 degree C and 1 atm
Fe at 1200 degree C
C2H6(g) at standard conitions
Cl2(g) at 2 atm

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