Stoichiometry Steps

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

Tags

NGSS.HS-PS1-7

Reorder the following steps in order to answer the following question: How many liters of O₂ gas are needed to react with 3.46 g of H₂ to form water?

• Convert grams of H₂ to mole using molar mass

• Convert moles of H₂ to moles of O₂ using balanced equation

• Use PV = nRT to solve for liters of O₂

Reorder the following steps to solve the following question: How many atoms of Cu would be produced from a 65.0mL of a 4.00M Copper (II) Chloride solution? 2 Al + 3 CuCl₂ --> 3 Cu + 2 AlCl₃

• Convert 65.0mL to L

• Convert mol of CuCl₂ to mol of Cu using balanced equation

• Convert mol of Cu to atoms using 6.02 x 10²³

• Round answer using 3 sig. fig.

How many grams of H₂ are needed to react with 2.00 moles of N₂?

• moles of N₂

• moles of H₂

• molar mass of H₂

• molar mass of N₂

Tags

112.43.c.9.C

How many grams of H₂ are needed to react with 2.00 moles of N₂?

• moles of H₂

• molar mass of H₂

• molar mass of N₂

• moles of N₂

Tags

112.43.c.9.C

How many grams of O₂ are produced to with 6.00 moles of NaClO₃? What should you put in the denominator?

• 2

• 32

• 90

• 3

Tags

112.43.c.9.C

• 1

• 160

• 238

• 2

Tags

112.43.c.9.C

If a chemist calculates the maximum amount of product that could be obtained in a chemical reaction, he or she is calculating the

• theoretical yield

• mole ratio

• actual yield

• percentage yield

Tags

NGSS.HS-PS1-7

• 3

• 96

• 90

• 2

Tags

112.43.c.9.C

What is the measured amount of a product obtained from a chemical reaction?

• mole ratio

• theoretical yield

• percentage yield

• actual yield