How many moles of P are needed to react with 30.1 of O2?

24.08 moles of phosphorous are needed to react with 30.1 moles of oxygen.

Explanation:

Given data:

Number of moles of O₂ = 30.1 mol

Number of miles of P = ?

Solution:

Chemical equation:

4P + 5O₂   →    2P₂O₅

Now we will compare the moles of phosphorus and oxygen.

                                O₂            :             P

                                 5             :               4

                                 30.1        :            4/5×30.1 = 24.08 mol

So 24.08 moles of phosphorous are needed to react with 30.1 moles of oxygen.