Molecular Formula Of Ch2

A compound has an empirical formula of CH2. It has a molecular mass of 56.1. What is the molecular formula?

Expert Answers

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Step 1: We can start solving this problem using the molecular mass of CH2.

For CH2

   C =12.011 g/mole

+ H = 1.008 g/mol x 2


     14.027 g/mole

Step 2. Get the ratio of the empirical mass and the molecular mass.

= 56.1/14.027

= 3.999 = 4

Step 3. Multiply the resulting number with the subscripts of the empirical formula.

4(CH2) = C4H8

The molecular formula is C4H8.

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