Question

A compound with a molecular mass of 34g /mol is known to contain 5.88% hydrogen and
94.12% oxygen .Find the empirical and molecular mass of the compound.(Atomic mass
of oxygen=16amu)

plz give answer with step by step​

Answer 1

Answer:

Explanation:

mass of hydrogen=5.88%*34=1.992gm(which is nearly equal to   2gm)

mass of oxygen=94.12%*34=32gm

we know atomic mass of hydrogen is 1 gm and mass of oxygen=16gm

so there are two atoms of hydrogen and oxygen  

so emperical formula =h2o2

molecular mass of compound=2+2*16=34

Answer 2

5.88 g H × (1 mol H/1.01 g H) = 5.82 mol H

94.12 g O × (1 mol O/16.00 g) = 5.88 mol O

The empirical formula, HO, has a formula mass of 17 g/mol.

The molecular formula is H₂O₂ (hydrogen peroxide) with a molar mass of 34.