Question

a sample of solid is decomposed and found to contain 6.52g of potassium, 4.34 g of chromium and 5.34 of oxygen, what is the empirical formula of the compound? help asap​

Answer 1

K₂CrO₅

Step-by-step explanation:

The empirical formula is the simplest formula of a compound. To find the empirical formula, we follow the procedure below:

Elements Potassium Chromium Oxygen

Mass 6.52 4.34 5.34

Molar mass 39 60 16

Number of moles 6.52/39 4.34/60 5.34/16

0.167 0.072 0.333

Divide through by

the smallest 0.167/0.072 0.072/0.072 0.333/0.072

2.3 1 4.6

2 1 5

Empirical formula K₂CrO₅