Mole to Mole Ratios

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 

3 CaCl₂ + 2 Na₃PO₄ → Ca₃(PO₄)₂ + 6 NaCl

What is the mole ratio of NaCl to Ca₃(PO₄)₂?

• 1:6

• 6:1

• 2:3

• 3:2

Tags

NGSS.HS-PS1-7

• 2 moles

• 3 moles

• 6 moles

• 9 moles

Tags

DOK Level 3: Strategic Thinking

• 6 moles

• 3 moles

• 12 moles

• 4 moles

• 0.75 moles

• 1.5 moles

• 2.25 moles

• 3 moles

Tags

DOK Level 3: Strategic Thinking

• 1 mole

• 2 moles

• 4 moles

• 8 moles

Tags

DOK Level 3: Strategic Thinking

• 1 mole

• 2 moles

• 4 moles

• 8 moles

Tags

DOK Level 2: Skill/Concept

Hg(OH)₂ + 2 H₃PO₄ → Hg₃(PO₄)₂ + 6 H₂O

What is the mole ratio of Hg(OH)₂ to Hg₃(PO₄)₂ ?

• 1 to 2

• 2 to 1

• 3 to 1

• 1 to 3