An unknown compound has the following chemical formula:
P2Ox

where x stands for a whole number. Measurements also show that a certain sample of the unknown compound contains 8.20 mol of oxygen and 3.3 mol of calcium. Write the complete chemical formula for the unknown compound.

The chemical formula of the compound is .

Explanation:

In 1 mole of there are 2 moles of phosphorus atom.

Then 3.3 moles of phosphorus will be in :

In 1 mole of there are x moles of oxygen atom.Then 1.65 moles of compound will have :

Moles of oxygen in 1.65 moles of compound = 8.20 mol

The chemical formula of the compound is .