Here is the question:
1.056g of a metal carbonate, containing an unknown metal M, is heated to give the metal oxide and .376g CO2.
MCO3(s) + heat --> MO(s) + CO2(g)
What is the identity of the metal M?
(a) Ni
(b) Cu
(c) Zn
(d) Ba
Here is what I tried to do.
.376g CO2 * 1 mol CO2/44.01g CO2 * 1mol MCO3/1 mol CO2 * 1 mol CO3/1 mol MCO3 * 60.01g CO3/ 1 mol CO3 = .5127g CO3
Then:
1.056g MCO3 - .5127g CO3 = .5433g M
First of all, is my line of thinking correct up to this point?
Second, what is the next step?
Thanks for any input you can offer.