Molar Mass to Moles

To melt some ice, Hunter throws 455 g of calcium chloride, CaCl₂ on his sidewalk. How many moles of CaCl₂ did he throw? (*Hint: molar mass is grams per 1 mole)

• 50,500 moles

• 4.1 moles

• 2.5 moles

• 111 moles

How many moles are in 2.35 g H₂O? (*Hint: molar mass is grams per 1 mole)

• 0.13 mols

• 13 mols

• 1.3 mols

• 130 mols

Tags

NGSS.HS-PS1-7

How many moles are in 106.3 g of Copper, Cu? (*Hint: molar mass is grams per 1 mole)

• 167 moles

• 1.67 moles

• 16.7 moles

• .167 moles

How many moles are present in 32.3 grams of carbon dioxide (CO₂)? (*Hint: molar mass is grams per 1 mole)

• 44 moles

• 1421 moles

• 1.36 moles

• 0.73 moles

Molar mass is in units of ________.

• grams (g)

• grams/mole (g/mol)

• mole (mol)

• moles/gram (mol/g)

Tags

NGSS.HS-PS1-7

What is the mass of .072 moles of FeCl₃? (*Hint: molar mass is grams per 1 mole)

• 162.3 g

• 11.7 mols

• 11.7 g

• 11.7 g/mol

Tags

NGSS.HS-PS1-7

How many moles are there in 440g of carbon dioxide molecules?

• 11

• 10

• 16

• 0.25

Tags

NGSS.HS-PS1-7

36.0 g of Be contains how many moles?

• 0.25 mol

• 4.0 mol

• 45 mol

• 320 mol

How many moles are in 22 g of argon? 

• 880 moles

• 0.55 moles

• 1.81 moles

• 5 moles

How many moles are in 15 grams of lithium?

• 0.5 moles

• 104.1 moles

• 2.2 moles

• 50 moles