Mole Ratio and One-Step Stoichiometry Practice

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

What numbers in a balanced equation do we use to determine mole ratios?

• Subscripts

• Superscripts

• Coefficients

N₂ +  3H₂ → 2NH₃ 
What is the mole ratio between Nitrogen and Hydrogen?

• 1:3

• 1:2

• 2:3

• 3:2

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

• 6

• 2

• 3

• 1

Tags

NGSS.MS-PS1-5

Where will the mole ratio of K to KBr go? If no mole ratio is used, choose the blank box.

How many grams are in 3.30 mol of potassium sulfide?

• 363 g

• 454 g

• 238 g

• 132 g

Tags

NGSS.HS-PS1-7

Where will the mole ratio of water to methane go? If no mole ratio is used, choose the blank box.

Tags

NGSS.HS-PS1-7

Which of the following dimensional analysis setups will correctly convert 4.00x10²³atoms of cobalt to moles of cobalt? How many moles of colbalt are there?

• setup B : 0.664 mol Co

• setup A: 2.41x10⁴⁷mol Co

• setup A : 0.664 mol Co

• setup B: 2.41x10⁴⁷mol Co

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

• 6.0 g

• 3.0 g

• 12.12 g

• 2.02 g

Tags

NGSS.HS-PS1-7

How many grams of O₂ will be produced from 12.00 moles of NaClO₃?

• 256 g of O₂

• 576 g of O₂

• 288 g O₂

• 32 g O₂

Tags

NGSS.HS-PS1-7