Mole to Mass Conversions

What is the molar mass of Ba(OH)₂?

• 153.49 g/mol

• 201.97 g/mol

• 56.24 g/mol

Convert 50.0 grams of H₂O to moles of H₂O.

• 901 moles

• 18.02 moles

• 2.77 moles

What mass of calcium chlorate, Ca(ClO₃)₂, is equivalent to 0.750 moles of the substance?

• 155.24 grams

• 206.98 grams

• 128.65 grams

2.50 moles of sodium sulfate, Na₂SO₄, are added to a solution. What mass of the substance was this?

• 297.65 grams

• 142.05 grams

• 355.13 grams

What is the molar mass of aluminum carbonate, Al₂(CO₃)₃?

• 54.99 g/mol

• 233.99 g/mol

• 185.99 g/mol

3.0 moles of sodium hydroxide, NaOH, is equal to what mass?

• about 40 grams

• about 23 grams

• about 120 grams

Tags

NGSS.HS-PS1-7

When converting a mass to moles, what unit must be in the denominator of the conversion factor?

• grams

• moles

• grams/mole

176 grams of carbon dioxide, CO₂, is equal to how many moles of the substance.

• about 44 moles

• about 4 moles

• about 1 mole

What is the mole used for?

• To measure the amount of grams in a substance

• To measure the amount of atoms or molecules in a substance

• To measure the amount of energy in a substance

• To measure the amount of bonding in a substance

Tags

NGSS.HS-PS1-7

Which represents the greatest mass of sulfur?

• 1 gram of sulfur

• 1 molecule of sulfur

• 0.5 mole of sulfur

• 6.02 x 10²³ atoms of sulfur

Tags

NGSS.MS-PS1-5