Understanding NH4₃PO₄ Composition and Avogadro's Number

The video tutorial explains how to find the number of atoms in ammonium phosphate (NH4(3)PO4). It begins by identifying the element symbols and calculating the number of each type of atom using subscripts and multiplication. The total number of atoms is then determined by summing these values. Additionally, the video covers how to calculate the number of nitrogen atoms in one mole of ammonium phosphate using Avogadro's number.

What elements are present in the compound NH4₃PO₄?

• Nitrogen, Hydrogen, Potassium, Oxygen

• Neon, Hydrogen, Phosphorus, Oxygen

• Nitrogen, Hydrogen, Phosphorus, Oxygen

• Nitrogen, Helium, Phosphorus, Oxygen

How many nitrogen atoms are present in NH4₃PO₄?

• 2

• 4

• 1

• 3

What is the total number of hydrogen atoms in NH4₃PO₄?

• 4

• 8

• 12

• 16

How many total atoms are there in a molecule of NH4₃PO₄?

• 18

• 24

• 20

• 22

What is the total number of oxygen atoms in NH4₃PO₄?

• 5

• 2

• 3

• 4

How do you calculate the number of nitrogen atoms in one mole of NH4₃PO₄?

• Multiply by Avogadro's number

• Divide by Avogadro's number

• Subtract Avogadro's number

• Add Avogadro's number

What is Avogadro's number used for in the context of this video?

• To find the number of atoms in a mole

• To find the number of protons

• To find the number of molecules

• To find the number of electrons