Counting Atoms Practice

What is the total number of atoms in 3H₂SO₄?

• 18 (5 Hydrogen + 3 Sulfur + 10 Oxygen)

• 21 (6 Hydrogen + 3 Sulfur + 12 Oxygen)

• 24 (8 Hydrogen + 3 Sulfur + 13 Oxygen)

• 15 (4 Hydrogen + 3 Sulfur + 8 Oxygen)

How many Oxygen atoms are in Al₂(SO₄)₃?

• 6

• 8

• 10

• 12 (4x3)

What does the term 'molecular formula' refer to?

• It shows the number and type of atoms in a molecule.

• It describes the physical state of a substance.

• It indicates the molecular weight of a compound.

• It represents the chemical structure of a molecule.

How many total atoms are in the compound C₆H₁₂O₆?

• 20

• 22

• 24

• 26

How many atoms of Oxygen are in Fe(NO₃)₃?

• 6

• 7

• 8

• 9 (3*3)

What does the coefficient in a chemical formula indicate?

• It indicates the number of atoms in a molecule.

• It indicates the number of molecules or formula units of the compound.

• It indicates the type of chemical bonds present.

• It indicates the temperature at which the compound is stable.

How many Nitrogen atoms are in 3(NH₄)₂SO₄?

• 4 Nitrogen

• 6 Nitrogen

• 8 Nitrogen

• 2 Nitrogen

How many total atoms are in the compound Fe₂(SO₄)₃?

• 10

• 12

• 14

• 16

How many atoms of Hydrogen are in H₂O?

• 1

• 2

• 3

• 4

How many Carbon atoms are in 2C₆H₆?

• 10 (5x2)

• 12 (6x2)

• 14 (7x2)

• 8 (4x2)