How to calculate the molecular formula from the empirical formula

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How does one determine a molecular formula from the empirical formula? Need Help!!!

15 Points!!
A) Multiply subscripts in the empirical formula by molar mass/empirical formula mass
B) Multiply subscripts in the empirical formula by empirical formula mass/molar mass
C) Multiply subscripts in the empirical formula by molar mass/grams of element
D) Multiply subscripts in the empirical formula by grams of element/ molar mass

Answered by admin @


A

To make the compound have the molar mass given, you need to increase the empirical formula mass to the molar mass given. An easy way to do that is to multiply by the molar mass/empirical formula mass.


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