Determine the number of moles of oxygen in 3.20 moles of sodium hydrogen phosphate.

of oxygen are present in 3.20 moles of .

Further Explanation:

Mole is a measure of the amount of substance. It is defined as the mass of a substance that has the same number of fundamental units as there are atoms in 12 g of carbon-12. Such fundamental units can be atoms, molecules or formula units.

The structure of sodium hydrogen phosphate is attached in the image.

In  , the central atom phosphorus is bonded to four oxygen atoms. The one oxygen is bonded to phosphorous by double bond while the other three are bonded by phosphorous atom by single bonds. The two single bonded oxygen atoms are attached to sodium atom while one single bonded oxygen atom is bonded to hydrogen.

Therefore 1 mole of contains 2 mole of sodium, 1 mole of hydrogen and 4 moles of oxygen atoms.

Number of moles of oxygen in 1 mole of = 4

So the number of moles of oxygen in 3.20 moles of is calculated as follows:

So, 3.20 moles of  contain 12.8 moles of O.

Learn more:

1. Identification of ionic bonding:

2. Calculation of moles of ions:

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Mole concept

Keywords: sodium, hydrogen, phosphorous, oxygen, Na2HPO4, atoms, moles, carbon, 12 g, 3.20 moles, 12.8 moles, single bond and double bond.

c. 75.7

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