February 20, 2017

Homework Help: chemistry

Posted by blasting on Thursday, February 11, 2010 at 2:35am.

Which of the following is the formation reaction for CaO(s) ?
can you check my answer(the one that has star next to it)
A. Ca(s) + 1/2O2(g)= CaO(s).
B. CaO(s)= Ca(s) + 1/2O2(g)
C. Ca2+(aq) + O2–(aq)= CaO(s)
D. 2 Ca(s) + O2(g)= 2CaO(s) (*)
E. 2 CaO(s)= 2 Ca(s) + O2(g)

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