Stoichiometry part 2

What is the first step in mass-to-mass calculations?

• List your unknowns

• Write the balanced equation

• Convert mass to moles

• List your knowns

Which of the following is NOT a conversion factor used in mass-to-mass calculations?

• Mass of the unknown elements

• Volume of the unknown element

• Mole ratio between known and unknown

• Molar mass of known elements

What is the molar mass of iron used in the example problem?

• 0.7164 grams per mole

• 55.845 grams per mole

• 159.7 grams per mole

• 40 grams per mole

How many moles of iron oxide are produced from 4 moles of iron?

• 4 moles

• 2 moles

• 1 mole

• 3 moles

What is the final mass of iron oxide produced in the example?

• 52.7 grams

• 57.2 grams

• 40 grams

• 159.7 grams