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# Empirical Formula Question 'plz help'

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1. Hey,

Last year in OCR A unit 1 there was a question asking to find the empirical formula and I end up with 2 whole numbers and one in decimal !
So my question is what to do after that should I round the decimal number to the nearest whole number ? or there is another method ?

Last year question was : Determine the empirical formula of the compound. Show your working out.

O 30.7% S 15.4% Tm 53.9%

Thank you ^^
2. (Original post by yoomi)
Hey,

Last year in OCR A unit 1 there was a question asking to find the empirical formula and I end up with 2 whole numbers and one in decimal !
So my question is what to do after that should I round the decimal number to the nearest whole number ? or there is another method ?

Last year question was : Determine the empirical formula of the compound. Show your working out.

O 30.7% S 15.4% Tm 53.9%

Thank you ^^
If the number in the ratio isn't close to a whole number (e.g. 1.5 in this example) you would multiply everything by 2 to make it whole.

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