Answer:
Blank 1: 4
Blank 2: 1
Blank 3: 2
Explanation:
The unbalanced reaction expression is given as:
Na + O₂ → Na₂O
Now, we use a mathematical approach to balance the reaction given above.
Assign coefficients a , b and c for the blanks:
aNa + bO₂ → cNa₂O
Conserving Na : a = 2c
O: 2b = c
So, let c = 1, a = 2 and b = [tex]\frac{1}{2}[/tex]
Multiply through by 2;
a = 4, b = 1 and c = 2
4Na + O₂ → 2Na₂O
Blank 1: 4
Blank 2: 1
Blank 3: 2
