Stoichiometry Review

What is the mole-to-mole ratio for hydrogen and oxygen in the balanced equation: 2 H₂ + O₂ -> 2 H₂O?

• 1:2

• 1:1

• 3:1

• 2:1

Tags

NGSS.HS-PS1-7

How many moles of H₂O are produced when 4 moles of O₂ react? 2 H₂ + O₂ -> 2 H₂O

• 8 mol

• 2 mol

• 6 mol

• 10 mol

Tags

NGSS.HS-PS1-7

• 128.57 g

• 58.65 g

• 117.3 g

• 234.6 g

• 2.5 mol

• 1.5 mol

• 0.186 mol

• 0.5 mol

Tags

NGSS.HS-PS1-7

What is the percent yield if the actual yield is 25 grams and the theoretical yield is 30 grams?

• 83%

• 75%

• 50%

• 20%

Tags

NGSS.HS-PS1-7

• 2:3

• 1:2

• 1:3

• 3:2

• 36 g

• 72 g

• 144 g

• 130 g

Tags

NGSS.HS-PS1-7

• 0.85 moles

• 1.7 mole

• 3.4 moles

• 6.8 moles

Tags

NGSS.HS-PS1-7

• 5.32 g

• 15.53 g

• 8.45 g

• 14.67 g

Tags

NGSS.HS-PS1-7

What is the percent yield if the actual yield is 40 grams and the theoretical yield is 50 grams?

• 60%

• 70%

• 90%

• 80%