Understanding Fe2(SO4)3 Composition

The video tutorial explains how to determine the number of atoms in iron(III) sulfate, Fe2(SO4)3. It begins by identifying the elements present and their subscripts. The tutorial then demonstrates how to calculate the total number of atoms by considering the subscripts and the multiplier from the parentheses. It also covers how to find the number of sulfur atoms in one mole of the compound using Avogadro's number. The video concludes with a brief thank you from Dr. B.

What elements are present in the compound Fe2(SO4)3?

• Sulfur, Oxygen, and Hydrogen

• Iron, Oxygen, and Hydrogen

• Iron, Sulfur, and Nitrogen

• Iron, Sulfur, and Oxygen

What is the subscript for sulfur in the compound Fe2(SO4)3?

• 2

• 3

• 1

• 4

How many total atoms are present in one formula unit of Fe2(SO4)3?

• 15

• 17

• 19

• 21

How many oxygen atoms are there in Fe2(SO4)3?

• 8

• 10

• 12

• 14

To find the number of sulfur atoms in one mole of Fe2(SO4)3, which constant is used?

• Gravitational constant

• Avogadro's number

• Boltzmann's constant

• Planck's constant

If you have one mole of Fe2(SO4)3, how many sulfur atoms do you have?

• 18

• 9

• 6

• 3