Molar MaSS

Molar mass is in units of ________.

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

What is the molar mass of Mg₃N₂?

• 191.6 g/mol
• 76.64 g/mol
• 38.32 g/mol
• 100.95 g/mol

What is the mass of one mole of Al₂(SO₄)₃?

• 75.04 g
• 342.14 g 
• 75.04 mol
• 342.14 mol

Mass of one mole of CO₂

• 44
• 44g
• 28
• 28g

What is the molar mass of NaCl?

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

What is the molar mass of NaOH?

• 40 g/mol
• 38.989 g/mol
• 23.998 g/mol
• 57.004 g/mol

Calculate the molar mass of Ba(C₂H₃O₂)₂

• 255.3 g/mol

• 237.3 g/mol

• 228.3 g/mol

• 196.3 g/mol

How many moles of (NH₄)₂O are present in 74.9 g?

• 3,907.0  moles
• 1.44 moles
• 8.67x10²³moles
• 0.79 moles

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

Find the mass in grams of 0.75 moles of magnesium (Mg).

• 32 grams
• 18 grams
• 2.21 x 10 ^23 grams