Three compounds containing potassium and oxygen are compared. analysis shows that for each 1.00 g of o, the compounds have 1.22 g, 2.44g, and 4.89 g of k, respectively. show how these data support the law of proportion..

The law of proportion states that elements combine in whole number ratios. The gram readings for K are multiples of each other, both in grams and moles.
Let us compare the ratios:
2.44 grams/1.22 grams = 2
4.89 grams/2.44 grams = 2

Therefore, Potassium always combines with Oxygen in a ratio of 2  is to 1.

668900 atoms in total