Molar Mass to Mole

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

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-4

Molar mass is in units of ________.

• grams (g)

• grams/mole (g/mol)

• mole (mol)

• moles/gram (mol/g)

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

Which conversion factor should be used to solve the following, "How many moles in 28 grams of CO₂?"

• mol = 22.4 L 

• mol = 44.01 g

• mol = 6.02x10²³ atoms

• more than one

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

• 11

• 10

• 16

• 0.25

Tags

NGSS.HS-PS1-7

How many moles are in 22 g of argon? 

• 880 moles

• 0.55 moles

• 1.81 moles

• 5 moles

How many moles are in 9.8 grams of calcium? 

• 0.2 moles

• 4.1 moles

• 1 mole

• 392 moles

What is the molar mass of Mn₂Se₇?

• 134 g/mole

• 663 g/mole

• 189 g/mole

• 608 g/molw

What is the molar mass of (NH₄)₂SO₄?

• 66 g/mole

• 114 g/mole

• 100 g/mole

• 132 g/mole

What is the molar mass of CaCO₃?

• 98 g/mol

• 100 g/mol

• 124 g/mol

• 130 g/mol