Tuesday
September 2, 2014

Homework Help: Chemistry

Posted by Annie on Wednesday, June 19, 2013 at 9:34pm.

Which of the following substances have a standard heat of formation of zero?

O2 at 25.O degrees C and 1 atm
Fe at 1200 degrees C
C2H6 at standard conditions
Cl2 at 2 atm

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