Question

The empirical formula and molecular mass of a compound are CH2O and 180 g,
respectively. What will be the molecular formula of the compound ?

Answer 1

hey there buddy .....

here's your answer.....

to calculate molecular formula.......

first we have to calculate mass of the empirical formula which is =30g....
then we will divide the given mass by this mass...we will get.
180/30= 6....
now we will..
multiply the empirical formula by 6 to get our required molecular formula...which is .
6*CH2O= C6H12O6.....
hope it helps....

Answer 2

The empirical formula of the compound = CH2O
The empirical mass of the compound = 12 + 2 + 16 = 30 g
The molecular mass of the compound = 180 g
n represent number of atoms
n(empirical mass) = molecular mass
n(30) = 180 
n = 6  

The molecular formula of the compound = n(CH2O)
                                                                     = 6(CH2O)
                                                                     = C6H12O6
C6H12O6 is the molecular formula 

Hope this helps you