A compound with the empirical formula CH 2 CH2 has a molar mass of 126 126 g/mol. What is the molecular formula for this compound?

The molecular formula of the compound is

Explanation:

We are given:

Empirical formula of the compound =

For determining the molecular formula, we need to determine the valency which is multiplied by each element to get the molecular formula.

The equation used to calculate the valency is :

We are given:

Mass of molecular formula = 126 g/mol

Mass of empirical formula =

Putting values in above equation, we get:

Multiplying this valency by the subscript of every element of empirical formula, we get:

Hence, the molecular formula of the compound is

idk i’m struggling too