Understanding Sr3(PO4)2 Composition

The video tutorial explains how to determine the number of atoms in the compound strontium phosphate, Sr3(PO4)2. It begins by identifying the number of strontium atoms and then explains how to calculate the number of phosphorus and oxygen atoms by considering the subscript outside the parentheses. The tutorial concludes by summing up the total number of atoms in the compound, providing a clear and concise method for understanding chemical formulas.

How many strontium atoms are present in the compound Sr3(PO4)2?

• 1

• 2

• 3

• 4

What is the total number of phosphorus atoms in Sr3(PO4)2?

• 1

• 2

• 4

• 3

How many oxygen atoms are found in the compound Sr3(PO4)2?

• 4

• 8

• 6

• 10

What is the total number of atoms in the compound Sr3(PO4)2?

• 12

• 10

• 11

• 13

Which of the following correctly represents the number of each type of atom in Sr3(PO4)2?

• 3 strontium, 2 phosphorus, 8 oxygen

• 3 strontium, 3 phosphorus, 6 oxygen

• 3 strontium, 1 phosphorus, 4 oxygen

• 2 strontium, 3 phosphorus, 8 oxygen