Stoichiometry, %comp, molar mass, mole, Avogadro's number

The molar mass of an element is equal to its...

• Atomic mass
• Atomic number
• Oxidation number
• Valence electrons

The mass of one mole of substance is called...

• molecular mass
• mole constant
• molar mass
• atomic weight

What is the molar mass of sodium?

• 22.99mol/g

• 22.99g/mol

• 22.99g

• 22.99mol

What is the molar mass of table salt (NaCl)?

• 58.44mol

• 58.44g

• 1 mole

• 58.44 g/mol

How many particles are in a mole?

• 602
• 602 million
• 602 moles
• 6.02 x 10²³

Avogadro's number is....

• 6.022 x 10²³ moles in a particle

• 6.022 x 10²³ atoms in a mole of a substance

• a conversion factor from grams to moles

• a conversion factor that can only be used with single elements

Which would have more atoms?

• 1 mole of Li
• 1 mole of Au
• 1 mole of Si
• None, all are equal

Calculate the molar mass of Ba(C₂H₃O₂)₂

• 255.3 g/mol

• 237.3 g/mol

• 228.3 g/mol

• 196.3 g/mol

Calculate the molar mass for Al(OH)₃

• 78.0 g/mol

• 72 g/mol

• 28 g/mol

• 25 g/mol

Molar mass is in units of ________.

• grams
• grams/mole
• mole
• moles/gram