4/13/22- Counting Atoms/ Physical Chemical changes

How many O's are in Al₂(SO₄)₃

• 4
• 12
• 7
• 24

Number of N in (NH₄)₂CrO₄

• 1
• 2
• 8
• 16

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

• 6
• 3
• 9
• 1

How many Hydrogen atoms are there in this chemical formula  Na(CH₅O)₂

• 2

• 10

• 4

• 6

How many atoms of Chlorine (Cl) are in 2MgCl₂?

• 2
• 1
• 4

How many atoms of Sodium (Na) are in 3Na₂Ca?

• 1
• 12
• 6

How many Hydrogen atoms are in 4H₂O?

• 6
• 8
• 2
• 4

How many atoms of Oxygen (O) are in 5C₆H₁₂O₂?

• 1

• 2

• 10

• 4

How many O's are in Al₂(SO₄)₃

• 4
• 12
• 7
• 24

How many Sodium (Na) atoms are in this compound 2Na₂CO₃

• 1
• 2
• 3
• 4