Stoichiometry :Understanding Moles

In chemistry, a "mole" is:

• The mass of an atom
• a large number used to count particles
• based on the volume of a substance

How many potatoes are in one dozen potatoes?

• 10

• 12

• 2

How many atoms of iodine are in a mole of iodine?

• 53

• 63.55g

• 6.02 x 10²³

The number 6.02 x 10²³ is called...

• Avocado's number

• Bohr's number

• Avogadro's number

Tags

NGSS.HS-PS1-7

We use the periodic table to calculate...

• mass
• molar mass
• moles

Tags

NGSS.HS-PS1-7

What is the molar mass of NaCl?

• 58.45g/mol

• 28g/mol

• 6.02 x 10²³

What is the molar mass of C₂H₄O₂?

• 40g

• 50g

• 60g

Tags

NGSS.MS-PS1-1

What is the molar mass of Mg₃N₂?

• 191.6 g/mol

• 76.64 g/mol

• 100.95 g/mol

What is the mass of one mole of Al₂(SO₄)₃?

• 75.04 g

• 342.14 g

• 342.14 mol

How many moles of (NH₄)₂O are present in 74.9 g?

• 3,907.0 moles

• 1.44 moles

• 0.79 moles