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When balancing equations, the only numbers that can be changed are _____; remember that _____ must never be changed in order to balance an equation. II. Balance the following equations: 1. Al + O 2 Al 2O 3 2. C 3H 8 + O 2 CO 2 + H 2O 3. Al(NO 3) 3 + NaOH Al(OH) 3 ...
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