February 24, 2017

Homework Help: Science

Posted by Jem on Monday, July 27, 2009 at 5:52pm.

1.Is molar mass always done for one mol of substance?
Let me make up an example:
2H2(g)+O2(g)--> 2H2O When finding molar mas of water would it be 2(2(1.01)+2(16)) or just 2(1.01)+16?

2. I'm not really sure about endergonic exergonic reaction because my teacher is teaching some grade 12 stuff to us. So is this correct decomposition reactions are endergonic so their reverse reaction which is synthesis would be exergonic and dissolving which is a phase change is endergonic?

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