### Rounding in Mole Ratios for Empirical Formulas

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**Thu Oct 04, 2018 11:37 pm**When multiplying by an integer to get a whole number for the mole ratio in an empirical formula, do you round the other numbers before multiplying them also? Or do you keep the unrounded number and multiply it by the same integer?

Ex. If the ratio for C is 1, H is 9.77, and O is 5.56, you multiply 2 by 5.56 to get 11. Do you round 9.77 to 10 and then multiply by 2? or do you multiply 9.77 by 2?

Ex. If the ratio for C is 1, H is 9.77, and O is 5.56, you multiply 2 by 5.56 to get 11. Do you round 9.77 to 10 and then multiply by 2? or do you multiply 9.77 by 2?