Molar Mass and Mole Conversion

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

• grams

• moles

• grams/mole

What is the molar mass of Ba(OH)₂?

• 153.49 g/mol

• 201.97 g/mol

• 56.24 g/mol

Tags

NGSS.HS-PS1-7

Convert 50.0 grams of H₂O to moles of H₂O.

• 901 moles

• 18.02 moles

• 2.77 moles

Tags

NGSS.HS-PS1-7

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

Tags

NGSS.HS-PS1-7

• 1.25 moles

• 1.50 moles

• 1.75 moles

• 2.00 moles

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

• 18 g

• 36 g

• 72 g

• 144 g

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

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

• about 44 moles

• about 4 moles

• about 1 mole