Question

Styrene has the empirical formula CH. It has a molar mass of 104 g. What is the multiplier to get the molecular formula?

Answer 1

The multiplier (n) to get the molecular formula is equal to 8.

Given the following data:

• Empirical formula of styrene = CH.

• Molar mass of CH = 104 g/mol.

Scientific data:

• Molar mass of carbon (C) = 12 g/mol.

• Molar mass of hydrogen (H) = 1 g/mol.

How to calculate molecular formula.

First of all, we would determine the gram-mass of styrene (CH) as follows:

$CH = 12+1$

CH = 13 g/mol.

For the molecular formula:

$(CH)n=104\\\\13n=104\\\\n=\frac{104}{13}$

n = 8

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