Lesson 4

Quizizz Lesson: Unit 7 Part 4

Molar Conversions and Introduction to Stoichiometry

Fill in the Blanks

What is the molar mass of CO₂? Round to nearest whole number.

Multiple Choice

Which one would contain the most?

• 1 mole of Carbon atoms

• 1 mole of Oxygen atoms

• 1 mole of Iron atoms

• They would all be the same. (6.02 x 10²³ atoms)

Fill in the Blanks

So using the conversion factor set up for you, how many moles of Cu are in 3.56 g of Cu? Round to nearest tenth.

Multiple Choice

How many moles of Ti would be found in 54.0 g of Ti?

• 0.89 moles of Ti

• 54.0 moles of Ti

• 1.13 moles of Ti

• 47.87 moles of Ti

Multiple Choice

How many grams of Mg would be found in 4.5 moles of Mg?

• 4.5 g of Mg

• 5.4 g of Mg

• 109.4 g of Mg

• 24.31 g of Mg

Multiple Choice

Using the balanced equation; how many moles of Iron (Fe) would I expect to produce if I use 2.5 moles of Iron (II) oxide (Fe₂O₃) ?

• 2 moles of Fe

• 3 moles of Fe

• 4 moles of Fe

• 5 moles of Fe

Multiple Choice

What is the molar mass of Fe₂O₃?

• 71.84 g/mol

• 159.68 g/mol

• 143.68 g/mol

• 215.52 g/mol

Multiple Choice

Using the molar mass of Fe₂O₃ (159.68 g/mol)

How many moles of Fe₂O₃ would be in 365 g of Fe₂O₃?

• 2.29 moles of Fe₂O₃

• 0.44 moles of Fe₂O₃

• 58,283.20 moles of Fe₂O₃

• 365.00 moles of Fe₂O₃