Question

A 18.46 g sample of a compound contains 5.89 g potassium (K), 5.34 g chlorine (Cl), and oxygen (O). Calculate the empirical formula.

Answer 1

mols K = grams/atomic mass K = ?
mols Cl = grams/atomic mass Cl = ?
mols O = grams/atomic mass O = ?
(Note: mass O = 18.46-g K - g Cl)

Now find the ratio of the elements to one another with the smallest number being 1.00. The easy way to do that is to divide the smallest number by itself (thereby getting 1.0000000); then divide the other numbers by the same small number. Round to whole numbers and that should give you the empirical formula.

Answer 2

the answer is: KClO3?

Answer 3

yes