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Calculating an Empirical Formula from Experimental Data: Decomposition of Water to 3.0 g H and 24 g O
- Write a pseudo-formula for water:
H3O1.5
- To get whole-number subscripts in our formula, divide all the subscripts by the smallest one, in this case 1.5.
- Our empirical formula for water, which in this case also happens to be the molecular formula, is H2O.