Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> What is the difference between the molecular mass and empirical mass of ethane?

Answer 1

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> The molecule of methane can be represented as $C_2{H}_6$.
So, the molecular formula will be $C_2{H}_6$ and the empirical formula will be $C{H}_3$.

The molecular mass can be found out as $\left(2X12\right)+\left(6X1\right)=30u$.

The empirical mass will be $\left(1X12\right)+\left(3X1\right)=15u$.

So, the difference between the molecular and empirical mass = $30u-15u=15u$.