Understanding Na2SO4 and Ions

The video tutorial explains how to determine the number of atoms in sodium sulfate (Na2SO4). It begins by identifying the individual atoms in the compound: sodium, sulfur, and oxygen. The tutorial then demonstrates how to calculate the total number of atoms in one mole of Na2SO4 using Avogadro's number. Finally, it discusses the concept of sulfate ions within the compound.

What elements are present in the chemical formula Na2SO4?

• Sodium, Sulfur, and Oxygen

• Sodium, Sulfur, and Chlorine

• Sodium, Sulfur, and Nitrogen

• Sodium, Phosphorus, and Oxygen

How many total atoms are there in a single molecule of Na2SO4?

• 6

• 5

• 7

• 8

What is Avogadro's number used for in chemistry?

• To calculate the mass of an atom

• To determine the number of atoms in a mole

• To find the volume of a gas

• To measure the density of a substance

How many sodium atoms are there in one mole of Na2SO4?

• 3.01 x 10^23

• 1.204 x 10^24

• 6.02 x 10^23

• 2.408 x 10^24

If you have one mole of Na2SO4, how many moles of sulfate ions do you have?

• 2 moles

• 4 moles

• 1 mole

• 0.5 moles

What is the charge of a sulfate ion (SO4)?

• 2+

• 1+

• 1-

• 2-

In one mole of Na2SO4, how many moles of sodium ions are present?

• 0.5 moles

• 1 mole

• 2 moles

• 3 moles