Stoichiometry Assessment

1 N₂ + 3 H₂ → 2NH₃

How many moles of hydrogen, H₂, are needed to react with 2.00 mol of nitrogen, N₂?

​ (a)   mol N₂ ÷ ​ (b)   mol N₂ x ​ (c)   mol H₂ = ​ (d)   mol H₂

• 2.00
• 1
• 3
• 6

Tags

112.43.c.9.C

Balance the following reaction:

​ (a)   CaC₂ + ​ (b)   H₂O → ​ (c)   C₂H₂ + ​ (d)   Ca(OH)₂

• 1
• 2

Tags

112.43.c.9.C

Balance the following reaction:

​ (a)   NaI + ​ (b)   Pb(SO₄)₂ → ​ (c)   PbI₄ + ​ (d)   Na₂SO₄

• 4
• 1
• 2
• 3

Tags

112.43.c.9.C

2 Al₂O₃ → 4 Al + 3 O₂

Calculate the moles of aluminum (Al) from 5.00 mol of aluminum oxide (Al₂O₃).

• 7.5 mol

• 10 mol

• 2.5 mol

• 4 mol

Tags

112.43.c.9.C

What is the molar mass of C₆H₁₂O₆?

c= 12 g

H=1g

O=16g

• 180 g

• 18 g

• 82,944 g

• 24 g

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

• Write a Balanced Equation
• Solve for Moles

• Write an Unbalanced Equation
• Solve for grams

You need 2 pieces of bread, 1 tablespoon of peanut butter and 2 tablespoons of jelly to make a sandwich.  If you have 10 pieces of bread, 4 tablespoons of peanut butter and 20 tablespoons of jelly, what is the limiting reactant?

• bread
• jelly
• peanut butter
• sandwich

Tags

NGSS.MS-PS1-2

Cl₂ + 2KBr → Br₂ + 2KCl
How many grams of potassium chloride (KCl) can be produced from 356 g of potassium bromide (KBr)?

• 749 g
• 223 g
• 479 g
• 814 g

Tags

NGSS.HS-PS1-7

• 1.91 grams Na

• 3.56 grams Na

• 1.16 grams Na

• 2.54 grams Na

Tags

NGSS.HS-PS1-7

Which of the following dimensional analysis setups will correctly convert 27.76 g of Li to atoms of Li?

• A

• B

• C

• D