Which equation is balanced?
Responses
Mg+O2→2MgO
upper case M lower case G plus upper case O subscript 2 end subscript rightwards arrow 2 upper case M lower case G upper case O
2Na+F2→2NaF
2 upper case N lower case A plus upper case F subscript 2 end subscript rightwards arrow 2 upper case N lower case A upper case F
2Al+3O2→Al2O3
2 upper case A lower case L plus 3 upper case O subscript 2 end subscript rightwards arrow upper case A lower case L subscript 2 end subscript upper case O subscript 3 end subscript
2Al+F2→2AlF3
2 upper case A lower case L plus upper case F subscript 2 end subscript rightwards arrow 2 upper case A lower case L upper case F subscript 3 end subscript
The balanced equation is 2Al+3O2→Al2O3
The equation that is balanced is:
2Al+3O2→Al2O3
To determine if an equation is balanced, you need to check if the number of atoms on each side of the equation are equal. Let's analyze each equation to see which one is balanced:
1. Mg+O2→2MgO:
On the left side, there is 1 Mg atom and 2 O atoms. On the right side, there are 2 Mg atoms and 1 O atom. Therefore, this equation is unbalanced.
2. 2Na+F2→2NaF:
On the left side, there are 2 Na atoms and 2 F atoms. On the right side, there are 2 Na atoms and 2 F atoms. This equation is balanced since the number of atoms on each side is equal.
3. 2Al+3O2→Al2O3:
On the left side, there are 2 Al atoms and 6 O atoms. On the right side, there are 2 Al atoms and 3 O atoms. This equation is unbalanced.
4. 2Al+F2→2AlF3:
On the left side, there are 2 Al atoms and 2 F atoms. On the right side, there are 2 Al atoms and 6 F atoms. This equation is unbalanced.
Based on the analysis, the balanced equation is:
2Na+F2→2NaF