Mass to Mole Conversions

Units used to measure Mass of an object

• Centimeters

• Milliliters

• Grams

What is the formula to convert mass to moles?

Tags

NGSS.HS-PS1-7

If you have 18 grams of water (H2O), how many moles do you have? (Molar mass of H2O = 18 g/mol)

• 1 mole

• 0.5 moles

• 2 moles

• 18 moles

Which of the following is the correct unit for molar mass?

• grams per mole (g/mol)

• moles per gram (mol/g)

• grams (g)

• moles (mol)

A sample contains 44 grams of carbon dioxide (CO2). How many moles of CO2 are present? (Molar mass of CO2 = 44 g/mol)

• 1 mole

• 2 moles

• 0.5 moles

• 44 moles

What is the molar mass of sodium chloride (NaCl)?

• 58.44 g/mol

• 22.99 g/mol

• 35.45 g/mol

• 60.00 g/mol

How many grams are in 2 moles of oxygen gas (O2)? (Molar mass of O2 = 32 g/mol)

• 64 grams

• 32 grams

• 16 grams

• 128 grams

Which of the following statements is true about mass to mole conversions?

• The number of moles is directly proportional to the mass.

• The number of moles is inversely proportional to the mass.

• Mass and moles are unrelated.

• Moles can only be calculated for gases.

Tags

NGSS.HS-PS1-7

If you have 0.5 moles of a substance with a molar mass of 10 g/mol, what is the mass?

• 5 grams

• 10 grams

• 0.5 grams

• 20 grams

What is the mass of 3 moles of hydrogen gas (H2)? (Molar mass of H2 = 2 g/mol)

• 6 grams

• 3 grams

• 2 grams

• 9 grams

Tags

NGSS.HS-PS1-7