Q.1:- A 0.24 g sample of compound of oxygen and boron was found by analysis to contain 0.096 g of boron and 0.144 g of oxygen. Calculate the percentage composition of the compound by weight.
We know that, % of any element in a compound
% of boron = 0.096/0.24 X 100 = 40%
% of oxygen = 0.144/0.24 X 100 = 60%