Question

Percent composition of oxygen in kclo3

Answer 1

First, we calculate the molar mass of oxygen in this compound.

M (O) = 16 * 3 = 48 g/mol.

Next, we calculate the molar mass of the entire compound. Write down the solution.

M (KClO3) = 39 + 35,5 + 16 * 3 = 122,5 g / mol.

Next, we find the mass fraction of oxygen in this compound.

W = 48/122,5 * 100 % = 39,1 %.

This means that the mass fraction of oxygen is 39.1 %