Writing Chemical Formula Worksheet With Answer Key - Spes Unica Page 15
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28Example 1: How to balance the equation,
CH
+ O
→ H
O + CO
4
2
2
2
1.
Reactants side
Products side
1 C
1C
4H
2H
2O
3O
Equation is NOT balanced
2. Balance the H atoms by putting 2 in FRONT of the H
O so we have 4 H
2
atoms on each side. Note: This will also increase the number of O atoms.
CH
+ O
→ 2H
O + CO
4
2
2
2
Reactants side
Products side
1 C
1C
4H
4H
2O
4O
3. Balance the O atoms by putting 2 in FRONT of the O
so we have 4 O
2
atoms on each side.
CH
+ 2O
→ 2H
O + CO
4
2
2
2
Reactants side
Products side
1 C
1C
4H
4H
4O
4O
The equation is now balanced
15
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