May 30, 2016

Homework Help: Chemistry

Posted by Anonymous on Monday, May 24, 2010 at 4:21pm.

For each:
Always true /sometimes true/never true.
1) the joule is the SI unit of force
2)the standard heat of formation for a substance is determined at 100 degrees C
3)all free elements in their standard states have a heat of formation of zero.

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