Find the empirical formula
1.) Compound percent composition: 11.19% hydrogen and 88 81% oxygen.
Empirical Formula:_____
2.) Compound percent compositio : 28.83% magnesium, 14.24% carbon and 56.93% oxygen.
Empirical Formula:_____
3.) Compound percent compostion: 52.20% carbon 13.00% hydrogen and 34.80% oxygen.
empirical formula:_____