Molar Ratio Practice

How many moles of Aluminum oxide are produced if you have 2 moles of Al?

• 3 mole

• 2 mole

• 1 mole

• 0.5 mole

Tags

NGSS.MS-PS1-5

What is the total number of moles of water needed to produce 2.5 moles of C₆H₁₂O₆?

• 2.5

• 6

• 12

• 15

2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O

A problem asks how many moles of oxygen gas are needed to react completely with 6 moles of ethane (C₂H₆). What is the second step in setting up the problem?

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Tags

NGSS.HS-PS1-7

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

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

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

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

How many moles of sodium chloride are in a 321.8 g sample?

• 18810 moles

• 3.315 x 10²⁴ moles

• 5.507 moles

• 4.767 moles

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2