Molar Ratio Lesson

Mole to Mole Ratio

Multiple Choice

Balance this equation:
P₄+O₂  -->  P₂O₃

• 3 P₄+ O₂ --> 2 P₂O₃
•  P₄+ O₂ --> 2 P₂O₃
•  P₄+ 3 O₂ --> 2 P₂O₃
•  P₄+ 2 O₂ --> 3 P₂O₃

Multiple Choice

Balance this equation

_Zn+_HCl-->_ZnCl₂ +_H₂

• 1,1,2,1

• 1,1,1,2

• 1,2,1,1

• 2,1,1,1

Multiple Choice

N₂ + 3H₂ → 2NH₃

What is the mole ratio between Nitrogen and Ammonium in the above reaction?

• 1 moles NH₃ / 2 moles N₂

• 2 moles NH₃ / 1 moles N₂

• 2 moles N₂ / 3 moles NH₃

• 1 moles N₂ / 3 moles NH₃

Multiple Choice

In the equation 2 Al2O3 --> 4 Al + 3 O2, what is the mole ratio of aluminum to oxygen?

• 10:6

• 3:4

• 4:3

• 2:3

Multiple Choice

4NH₃ + 5O₂-->4NO + 6H₂O

What is the total number of moles of NO produced when 1 mole of O₂ is completely consumed?

• 1

• 1.2

• 0.8

• 4

Multiple Choice

6CO₂ + 6H₂O --> C₆H₁₂O₆ + 6O₂

What is the total number of moles of water needed to make 2.5 moles of C₆H₁₂O₆?

• 2.5

• 6

• 12

• 15

Multiple Choice

6CO₂ + 6H₂O --> C₆H₁₂O₆ + 6O₂

What is the total number of moles of CO₂ needed to make 2 moles of C₆H₁₂O₆?

• 2.5

• 6

• 12

• 15

Multiple Choice

4NH₃ + 5O₂-->4NO + 6H₂O

What is the total number of moles of H₂O produced when 12 mole of NH₃ is completely consumed?

• 15

• 18

• 20

• 24