An organic compound contains 40.00% C , 6.67% H and the rest is oxygen, by mass . The mass of 0.02 mol of the compound is 3.60g.workout the .... A empirical formula of the compound. B molecular formula of the compound.?

1 Answer
Apr 13, 2018

1 mol is 180 grams (#=3.6/0.02#)

Explanation:

#0.40times180 = 72# grams C
#0.0667times180 = 12# grams H
#180-72-12 =96# grams O

C (12 g) H (1 g) and O (16 g):

#72/12 = 6# for C

#12/1 = 12# for H

#96/16 = 6# for O.

Your empirical formula #CH_2O#

Your molecular formula:
#C_6H_12O_6# (glucose)