An organic compound on analysis was found to contain 0.032% of sulphur. The molecular mass of the compound, If its molecule contains two sulphur atoms, is

W_OC = 100g
W_sulphur = 0.032g
No.of atoms of sulphur molecule = 2
No.of gram atoms of sulphur mole = 2
weight of sulphur in organic compound = 2(32)g=64g
100g of organic compound contain 0.032g of sulphur
"Xg" of compound contain 2(32g) of sulphur
MW of Organic compound =  $\frac{2\times 32\times 100}{0.032}$= 2 x 10⁵
Alternate method 
Approxinate molecular weight =