Mole Ratio

Mole Ratios used for conversions are derived from:

• the molar mass of the reactants in the balanced chemical equation

• the coefficients of the balanced chemical equation

• the subscripts of the products in the balanced chemical equation

• the group number of each element in the balanced chemical equation

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

Tags

NGSS.HS-PS1-7

N₂ +  3H₂ → 2NH₃ 
What is the mole ratio between Nitrogen and Ammonium in the above reaction?

• 1 moles NH₃ / 2 moles N₂ 

• 3 moles NH₃ / 1 moles N₂ 

• 2 moles N₂ / 2 moles NH₃ 

• 1 moles N₂ / 2 moles NH₃ 

What is the mole ratio of P₄ to O₂?

• 1:3

• 1:2

• 3:2

• 3:1

Tags

NGSS.HS-PS1-7

• 1 mole C = 1 mole CO₂

• 1 mole C = 2 moles CO₂

• 2 moles C = 1 mole CO₂

• 1 mole C = 3 moles CO₂

Tags

DOK Level 1: Recall

• 1:1

• 2:2

• 1:2

• 2:1

Tags

NGSS.MS-PS1-5

• 2 moles

• 3 moles

• 4 moles

• 6 moles

Tags

NGSS.HS-PS1-7

• 1 mol Fe = 2 mol FeCl₃

• 2 mol Fe = 2 mol FeCl₃

• 2 mol Fe = 3 mol FeCl₃

• 2 mol Fe = 1 mol FeCl₃

Tags

DOK Level 2: Skill/Concept

• 1:2

• 1:3

• 2:3

• 3:2

Tags

NGSS.HS-PS1-7

• 6 moles

• 3 moles

• 12 moles

• 4 moles