Mole, grams, particles and conversion factors

How many molecules of iodine are in a mole of iodine (formula I₂)?

• 53
• 106g

• 1.2 x 10²⁴

• 6.02 x 10²³

We use the periodic table to calculate...

• mass
• molar mass
• moles

What is the molar mass of NaCl?

• 58.45g/mol
• 28g/mol
• 12g/mol
• 6.02 x 10²³

What is the molar mass of C₂H₄O₂?

• 40g/mole

• 50g
• 60g/mole

• 68g

How do we get mass from moles?

• Multiply by Avogadro's number

• Multiply by molar mass

• Divide by Avogadro's number

• Divide by molar mass

Calculate the molecular mass of PbSO₄.

• 207 amu

• 303 g/mole

• 303 amu

• 1,020 g/mole

Calculate the molecular mass of Na₃PO₄.

• 164 g/mole

• 133 amu

• 164 amu

• 170 g/mole

How many particles are in a mole?

• 602

• 602 million

• 602 moles

• 6.022 x 10²³

Molar mass is in units of ________.

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

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 10²³ particles per one mole of a substance