Understanding Barium Phosphate Composition

This video tutorial explains how to determine the number of atoms in barium phosphate (Ba3(PO4)2). It covers the identification of element symbols and subscripts, the calculation of atoms within the compound, and the use of Avogadro's number to find the number of barium atoms in one mole of barium phosphate. The tutorial is presented by Dr. B and concludes with a summary of the key points discussed.

What elements are present in the compound Ba3(PO4)2?

• Barium, Phosphorus, and Oxygen

• Barium, Phosphorus, and Nitrogen

• Barium, Potassium, and Oxygen

• Boron, Phosphorus, and Oxygen

How many barium atoms are indicated by the subscript in Ba3(PO4)2?

• Four

• One

• Two

• Three

What is the total number of oxygen atoms in Ba3(PO4)2?

• Four

• Six

• Eight

• Ten

How many phosphorus atoms are present in the compound Ba3(PO4)2?

• Three

• Four

• Two

• One

To find the number of barium atoms in a mole of Ba3(PO4)2, which constant is used?

• Faraday's constant

• Boltzmann's constant

• Avogadro's number

• Planck's constant

What is the result of multiplying the number of barium atoms by Avogadro's number?

• The number of phosphorus atoms

• The total mass of barium

• The number of barium atoms in a mole of Ba3(PO4)2

• The number of moles of barium