A compound with the empirical formula CH2O has a molar mass of approximately 90 g/mol. What is its molecular formula?

Answer 1

Empirical formula is CH2O. Molecular formuls is (CH2O)x
The empirical formula mass is 12+2+16 = 30 so the molar mass is
30*x = 90
x = 90/30 = 3 therefore, that must be 3 units of CH2O. You can write the molecular formula as (CH2O)3 or as C3H6O3

Answer 2

Thanks! This was extremely helpful since I have a test tomorrow!

Answer 3

The empirical formula of a substance is found to be CH2O with a molar mass of 90 g/mol. what is the formula of this substance?