Mole and molar mass practice

Molar mass is in units of ________.

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

What is the molar mass of AuCl₃?

• 96 g
• 130 g
• 232.5 g
• 303.3 g

What is the definition for Avogadro's number?

• number of grams per one mole of a substance
• whole number ratio that is a multiple of a chemical formula
• simplest, whole number ratio of a chemical formula
• 6.02 x 10^23 particles per one mole of a substance

Which would have more atoms?

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

What is the molar mass of F₂?

• 9 g/mol

• 18 g/mol

• 19 g/mole

• 38 g/mol

Which compound has the highest molar mass?

• H₂O

• O₂

• Na

• K

What is the molar mass of NaBr?

• 22.99 g/mol

• 79.90 g/mol

• 102.89 g/mol

• 178.36 g/mol

6.02 x 10²³ is known as __________.

• Newton's Law

• Amadeo's Number

• Avogadro's Number

• Anthony's Number

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-7

How many moles of magnesium are present in 4.35 x 10^25 atoms of magnesium?

• 0.75581 mol Mg

• 72.3 mol Mg

• 7.2259 x 10^46 mol Mg

• 7.23 x 10^-1 mol Mg

How many hairs are in one mole of dog hair?

• Same as the mass

• 6.02 x 10^3

• Avogadro's number

• Undetermined