Activity Index
Equation Balancing #1
Identify the correct coefficients
Though coefficients of "1" are not ordinarily written into chemical equations, in this activity EVERY coefficient must be filled in, including coefficients of "1".
FeS +
HCl →
H
2
S +
FeCl
2
KNO
3
→
KNO
2
+
O
2
Pb(NO
3
)
2
→
PbO +
NO
2
+
O
2
Na +
H
2
O →
NaOH +
H
2
Fe +
H
2
O →
Fe
3
O
4
+
H
2
C
2
H
5
OH +
O
2
→
CO
2
+
H
2
O
Fe
3
O
4
+
H
2
→
Fe +
H
2
O
CO
2
+
NaOH →
NaHCO
3
NaCl +
H
2
SO
4
→
HCl +
NaHSO
4
CaC
2
+
H
2
O →
C
2
H
2
+
Ca(OH)
2
C
8
H
18
+
O
2
→
CO
2
+
H
2
O
CaCO
3
→
CaO +
CO
2
NH
3
+
O
2
→
H
2
O +
NO
NO +
O
2
→
NO
2
H
3
BO
3
→
H
4
B
6
O
11
+
H
2
O
C
6
H
12
O
6
→
C
2
H
5
OH +
CO
2
CaC
2
+
N
2
→
CaCN
2
+
C
CaCN
2
+
H
2
O →
CaCO
3
+
NH
3
C
6
H
6
+
O
2
→
CO
2
+
H
2
O
C
7
H
16
+
O
2
→
CO
2
+
H
2
O
H
3
PO
3
→
H
3
PO
4
+
PH
3
CO +
Fe
3
O
4
→
FeO +
CO
2
ZnS +
O
2
→
ZnO +
SO
2
Na
2
O
2
+
H
2
O →
NaOH +
O
2
SiO
2
+
H
2
F
2
→
SiF
4
+
H
2
O
Check
OK
Activity Index