Moles Mass Atoms

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 10^23 particles per one mole of a substance

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

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

What is the mass in grams of 5.90 mol C₈H_18?

• .0512 g
• 19.4 g
• 673 g
• 389 g

What is the mass of 2.50 mol of oxygen gas O₂?

• 40 g
• 80 g
• 16 g
• 32 g

How many moles are in 22g of argon?

• 0.55mol
• 1.8mol
• 8.8x10²mol

What is the mass of one mole of AuCl₃?

• 96g
• 130g
• 232.5g
• 303.5g

4.0 moles of H₂O would have what mass?

• 72 g
• 23 g
• 68 g
• 4.5 g

How many moles are in 22 g of argon? 

• 880 moles
• 0.55 moles
• 1.81 moles
• 5 moles