Mole Ratios

N₂ + 3H₂ --> 2NH₃
What is the total number of moles of NH₃ produced when 10 moles of H₂ reacts completely with N₂?

• 6.7
• 2.0
• 3.0
• 15.0

Tags

NGSS.HS-PS1-7

H₂+Cl₂-->2HCl
How many moles of Cl₂ is needed to react with 3 moles of H₂?

• 5
• 2
• 3
• 6

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

Tags

NGSS.HS-PS1-7

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

Tags

NGSS.HS-PS1-7

N₂ + 3H₂ --> 2NH₃
How many moles of N₂ is needed to react with 6 moles of H₂?

• 6.7
• 2.0
• 3.0
• 15.0

Tags

NGSS.HS-PS1-7

Which of the following represent a mole ratio between silver nitrate (AgNO3) and copper(II) nitrate (Cu(NO3)2) in the following reaction: 2AgNO₃ + Cu --> Cu(NO₃)₂ + 2Ag

• 2 mol AgNO₃ / 2 mol Ag
• 2 mol Ag / 2 mol AgNO₃ 
• 2 mol AgNO₃ / 2 mol Cu(NO₃)₂
• 2 mol AgNO₃ / 1 mol Cu(NO₃)₂

What is a mole ratio?

• An animal that burrows underground.

• How many moles of reactant are used up in a chemical reaction.

• The ratio of a reactant / product to a different one - compared by the number of particles.

• The process by which we multiply fractions by using numbers from a chemistry problem.

Where are the numbers for a mole ratio found?

• They are part of the chemical formulas for the reactants / products.

• They are given in the problem.

• They are found on the periodic table for those elements.

• They are found as coefficients in the reaction's balanced chemical equation.

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

• 3 : 2

• 3 : 4

• 4 : 3

• 2 : 3

3Mg + Fe₂O₃ → 3MgO + 2Fe

What is the mole ratio of magnesium to iron?

• 3 : 2

• 2 : 3

• 1 : 2

• 3 : 1

Tags

NGSS.HS-PS1-7