Stoichiometry - Mole to Mole Quiz

For the Balanced Reaction: 3 Mg + 1 Fe₂O₃ → 3 MgO + 2 Fe; What is the Ratio of moles of MgO to moles Fe?

• 3mol Mg / 2 mol Fe
• 2 mol Mg/ 3 mol Fe
• 1 mol Fe/ 2 mol Fe
• 3 mol MgO / 2 mol Fe

Tags

NGSS.HS-PS1-7

N₂ +  3H₂ → 2NH₃ 
How many moles of hydrogen are needed to react with 2 moles of nitrogen?

• 6
• 2
• 3
• 1

Tags

NGSS.HS-PS1-7

What is the first thing you must do to solve a stoichiometry problem?

• Write a Balanced Equation
• Panic
• Write an Unbalanced Equation
• Ask for help

2 KClO₃ → 2 KCl + 3 O₂
How many moles of oxygen are produced when 6.7 moles of KClO₃ decompose completely?

• 6.7 mol
• 1.0 mol
• 10.1 mol
• 4.5 mol

What is the ratio called made by using the coefficients in the balanced equation?

• Mole Ratio
• Stoichiometry
• Balanced
• Molar Mass

Tags

NGSS.HS-PS1-7

Using the pictured equation, how many moles of ZnCl2 are in 13 moles of HCl?

• 6.5
• 26

What is the mole ratio of Sulfur to Oxygen? (Hint: Balance the equation first!)

• 1/8
• 8/8
• 1/1
• 8/1

Tags

NGSS.HS-PS1-7