### Steps to calculating Molecular Formulas

Posted:

**Sat Oct 06, 2018 7:43 pm**Defintion: A molecular formula is the exact chemical formula of a compound.

Steps:

1.Figure out the empirical formula of the compound.

-If the problem and information given provides percentages, convert it into grams.

- Convert the grams into moles

- Divide each number by the smallest number of moles.

-Write the empirical formula

2. Find the molar mass of the empirical formula

3.Divide the Molecular Formula Molar Mass by the Empirical Formula Molar Mass

4. Multiply the whole number to the subscripts of the empirical formula

Steps:

1.Figure out the empirical formula of the compound.

-If the problem and information given provides percentages, convert it into grams.

- Convert the grams into moles

- Divide each number by the smallest number of moles.

-Write the empirical formula

2. Find the molar mass of the empirical formula

3.Divide the Molecular Formula Molar Mass by the Empirical Formula Molar Mass

4. Multiply the whole number to the subscripts of the empirical formula