stoichiometry

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

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

• mole ratio
• theoretical yield
• percentage yield
• actual yield

2 KClO₃ → 2 KCl + 3 O₂

How many moles of oxygen are produced when 6.7 moles of KClO₃ decompose completely? - Use mole ratio from balanced equation to calculate 6.7( 3O2/2KClO3)

• 6.7 mol

• 1.0 mol

• 10.1 mol

• 4.5 mol

N₂ + 3H₂ --> 2NH₃

What is the total number of moles of NH₃ produced when 10 moles of H₂ reacts completely with N₂? (mole ratio)

• 6.7

• 2.0

• 3.0

• 15.0

N₂ + 3H₂ --> 2NH₃

How many moles of N₂ is needed to react with 6 moles of H₂?(mole ratio from balanced equation 6 molH2(1 mole N2/3 moleH2)

• 6.7

• 2.0

• 3.0

• 15.0

2Na + S -->Na₂S
What is the total number of moles of S that reacts when 4.0 moles of Na were completely consumed?

• 1
• 2
• 0.5
• 4

2Na + S -->Na₂S
What is the total number of moles of Na₂S produced when 8.0 moles of Na were completely consumed?

• 1
• 2
• 0.5
• 4

What is the molar mass of table salt (NaCl)?

• 116.886 g/mol
• 35.453 g/mol
• 22.990 g/mol
• 58.443 g/mol

What is the mass of one mole of aluminum?

• 27 g
• 13 g
• 54 g
• 14 g

What is the molar mass of CO₂?

• 12
• 16
• 32
• 44