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Balance the following equations (Type in appropriate number before the chemical formulae in the box shown)
a) CaCO
3
(s) +
HCL(aq)
→
CaCl
2
(aq)+ H
2
O(l) + CO
2
(g)
b) C
2
H
3
(g)+
O
2
(g)
→
CO
2
(g) +
H
2
O(l)
c)BaCO
3
(s) +
HNO
3
(aq)
→
Ba(N
3
O
2
)(aq)+ H
2
O(l) + CO
2
(g)