605 Quiz Practice (Molar Mass and Conversions)

What is the molar mass of AuCl₃?

• 96 g

• 130 g

• 233 g

• 302 g

What is the mass in grams of 5.90 mol C₈H_18?

• .0512 g

• 19.4 g

• 673 g

• 389 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 molar mass of CO₂?

• 12 g/mol

• 16 g/mol

• 32 g/mol

• 44 g/mol

Tags

NGSS.HS-PS1-1

How many particles are in a mole?

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

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

• 40 g
• 80 g
• 16 g
• 32 g

What is the molar mass of Fe?

• 81.8 g/mol

• 55.85

• 81.8

• none of these

The mass of one mole of an element is equal to

• its atomic number from the periodic table, but in amus.

• its atomic mass from the periodic table, but in amus.

• its atomic mass from the periodic table, but in grams.

• its atomic number from the periodic table, but in grams.

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

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

Tags

NGSS.HS-PS1-7

Convert 50.0 grams of H₂O to moles of H₂O.

• 901 moles

• 18.02 moles

• 2.77 moles