Question

Breanne needed to find the percent composition of the compound KClOz The percent of potassium in the compound yes approximately A) 29% 32% 39% 43% Hydrogen peronde is a harmful by product of normal metabolic activity. In order to prevent damage, b, drogen peroxide mus: be​

Answer 1

The percent of potassium in the compound KClO₃ = 32%

Further explanation

Proust states the Comparative Law that compounds are formed from elements with the same Mass Comparison, so that compounds have a fixed composition of elements

`\tt \%mass=(Ar~element* number~of~element~in~compound)/(MW~compound)* 100\%`

We determine the molecular mass of KClO₃ then we determine the Ar from K (potassium) and the amount in the compound

MW KClO₃ : 122,55 g/mol

The amount of K in KClO₃ = 1

So %K :

`\tt =(39)/(122,55)* 100\%=31.8\%\approx 32\%`