Homework Help: Chem

Posted by Anonymous on Sunday, February 24, 2008 at 8:16pm.

Which of the following is the formation reaction for CaO(s) ?

A. CaO(s) Ca(s) + 21O2(g)
B. Ca2+(aq) + O2–(aq) CaO(s)
C. 2 Ca(s) + O2(g) 2CaO(s)
D. Ca(s) + 21O2(g) CaO(s).
E. 2 CaO(s) 2 Ca(s) + O2(g)
I know that you have to create an equation and I believe that the CaO is on the right side, but when breaking up the parts on the left I think it is Ca and o2, but when I balance it I get C, but not sure if that is right.

Chem - DrBob222, Sunday, February 24, 2008 at 8:46pm
You sound like you're on the right track but with no arrows your equations don't make sense. As for getting C, you CAN'T separate C from Ca.
Chem - Anonymous, Sunday, February 24, 2008 at 8:57pm
A. Ca(s)+ 1/2O2(g)arrow Cao(s)
Chem - Anonymous, Saturday, May 16, 2009 at 5:15pm
was A. right?
Chem - Anonymous, Friday, January 14, 2011 at 7:17pm
opb22222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222,.hncccccccccccccccccccccccccc111111112222222222222222222222222222222222222222222222222222222222222222222222nfnrf222ends222222222222222222vvznvs

Answer this Question

Related Questions

chemistry - Which of the following is the formation reaction for CaO(s) ? A. CaO...
chemistry - Which of the following is the formation reaction for CaO(s) ? can ...
Chemistry - Which of the following is the formation reaction for CaO(s) ? A. ...
chemistry - If heat of reaction, Ca(s) + 2H+(aq) Ca2+(aq) + H2(g) , is - 544 kJ/...
College Chemistry - The molar heat of reaction, H rxn, for the reaction of Ca(s...
Chemistry - The molar heat of reaction, H rxn , for the reaction of Ca(s) + 2H+(...
Chem - Which of the following is the formation reaction for CaO(s) Ca(s)+ 1/2O2...
chemistry - use the data given below to construct a Born-Haber cycle to ...
Chemistry - ∆H⁰rxn, for the reaction of Ca(s) + 2H+(aq) -&...
chemistry - If heat of reaction, Ca(s) + 2H+(aq) Ca2+(aq) + H2(g) , is - 544 kJ/...

For Further Reading

First Name:
School Subject:
Answer: