Question

calculate the percentage composition of each element in potassium chlorate KClO3​

Answer 1

answer: K=34.82 Cl=31.25 O3 = 42.85

Explanation:

the formula for calculating the percentage composition is

= mass of an element ×100 / Molar mass atomic mass of Potassium(K) =39

atomic mass of chlorine(Cl)=35

atomic mass of oxygen(O)= 16

. O3 = 3×16 = 48

Molar mass = 39+35+48

=112

% of K in KClO3 = 39×100 / 112

=3900 / 112

=34.82

% of Cl in KClO3 = 35×100 / 112

=3500 /112

=31.25

% of O3 in KClO3 =48×100 / 112

=4800 / 112

=42.85