Chemistry Examples

Balance Al_2O_3+Na→Al+Na_2O
Al2O3+NaAl+Na2O
Step 1
The law of conservation of mass states that matter cannot be created nor destroyed. There are no more or less atoms at the end of a chemical reaction than there were at the beginning. To balance a chemical equation, every element must have the same number of atoms on each side of the equation.
To balance a chemical equation:
1. Every element must have the same number of atoms on each side of the equation (law of conservation of mass).
2. Balancing the equation can be done only by adjusting the coefficients.
Step 2
Al is not a balanced element. To balance Al, multiply Al from the right side by 2.
Al2O3+Na2Al+Na2O
Step 3
O is not a balanced element. To balance O, multiply Na2O from the right side by 3.
Al2O3+Na2Al+3Na2O
Step 4
Na is not a balanced element. To balance Na, multiply Na from the left side by 6.
Al2O3+6Na2Al+3Na2O
Al2O3+NaAl+Na2O
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