The Mole

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 10²³ particles per one mole of a substance

How many moles are present in 32.3 grams of carbon dioxide (CO₂)?

• 44.01 moles
• 1421.52 moles
• 32.3 moles
• 0.73 moles

Tags

NGSS.HS-PS1-7

What is the mass in grams of 5.90 mol C₈H_18?

• .0512 g
• 19.4 g
• 673 g
• 389 g

Tags

NGSS.HS-PS1-7

How many grams are in 11.9 moles of chromium?

• 50 g
• 619 g
• 0.23 g
• 4.4 g

1 mole of Ca and 1 mole of Na have the same number of atoms.

• True

• False

Tags

NGSS.MS-PS1-1

1 mole is equivalent to 6.02 x 10²³ atoms

• False

• True

What is the definition of molar mass?

• 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

How many moles are present in 32.3 grams of carbon dioxide (CO₂)?

• 44.01 moles
• 1421.52 moles
• 32.3 moles
• 0.73 moles

Tags

NGSS.HS-PS1-7