Question

A compound was found to contain 14.34% oxygen. the minimum molecular weight of the compound is

Answer 1

From the data given in the question:  

14.34 g of Oxygen is present in 100 g of the compound.

 The Atomic weight of Oxygen is 16.

(In the “minimum mass” of the compound, assume that there is 1 Oxygen atom in it.) 

Then, 16 g of Oxygen must be present in ‘x’ g of the compound.

 Mathematically, x = 16 × 100 ÷ 14.34 = 111.58 g

Hence, 111.58 g is the minimum molecular weight of the compound.