Stoichiometry Conversion Factors [Full Length]

The coefficients in a chemical equation represent the number of ___________ of that substance

• grams

• molecules

• moles

• atoms

What is the mole ratio of C₃H₈ to CO₂ in the equation?

• 1 mole C₃H₈ = 3 mole CO₂

• 1 mole C₃H₈ = 5 mole CO₂

• 3 mole C₃H₈ = 2 mole CO₂

• 4 mole C₃H₈ = 1 mole CO₂

What is the molar mass of Fe₂O₃?

• 1 mole Fe₂O₃ = 55.84 g Fe₂O₃

• 1 mole Fe₂O₃ = 15.99 g Fe₂O₃

• 1 mole Fe₂O₃ = 71.85 g Fe₂O₃

• 1 mole Fe₂O₃ = 159.70 g Fe₂O₃

• 1 mole Fe₂O₃ = 431.10 g Fe₂O₃

What is the mass of 2 moles of C₃H₈?

• 44.11 g

• 88.22 g

• 24.02 g

• 2.02 g

In this equation:

2 Na + Cl₂ ➔ 2 NaCl

what is true?

• 4 moles of NaCl are produced

• 2 moles of Na react with 2 moles of Cl₂

• 2 moles of Na react with 1 mole of Cl₂

• 4 moles of Na react with 1 mole of Cl₂

To convert mass to moles, the conversion factor is

• molar mass

• mole ratio

• mole balance

• coeffecient

To convert moles to mass, the conversion factor is

• molar mass

• mole ratio

• mole balance

• coeffecient

To convert moles A ➔ moles B, the conversion factor is

• molar mass

• mole ratio

• mole balance

• coeffecient

In the equation 2 Al₂O₃ ➔ 4 Al + 3 O₂, what is the mole ratio of aluminum (Al) to oxygen (O₂)?

• 10 moles Al = 6 moles O₂

• 3 moles Al = 4 moles O₂

• 2 moles Al = 3 moles O₂

• 4 moles Al = 3 moles O₂

2 C₈H₁₈ + 25 O₂ ➔ 16 CO₂ + 18 H₂O.

How many moles of oxygen (O₂) are required to burn 0.40 moles of C₈H₁₈?

• 5.00 moles O₂

• 7.50 moles O₂

• 10.00 moles O₂

• 25.00 moles O₂