Mole Conversion Quiz

What is the mass of 0.89 mol of CaCl₂?

• 111 grams
• 0.008 grams
• 98.9 grams
• none of the choices

What is the molar mass of NaOH?

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

What is the molar mass of AuCl₃?

• 96 g
• 130 g
• 232.5 g
• 303.3 g

Which conversion factor should be used to solve the following, "How many moles of argon atoms are present in 11.2 L of argon gas at STP?"

• 1 mol = 22.4 L 
• 1 mol = 39.95 g
• 1 mol = 6.02x10²³ atoms
• More than 1

Which conversion factor should be used for the following question " How many molecules are there in 4.00 moles of glucose, C₆H₁₂O₆? 

• 1 mole = 78.12 g
• 1 mole = 22.4 L 
• 1 mol = 6.02x 10²³ particles 
• more than one

How many moles are in 22 g of argon? 

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

The total number of sodium atoms in 46.0 grams is

• 3.01 x 10²³
• 6.02 x 10²³
• 12 x 10²³
• 24 x 10²³

Which sample of O₂ contains a total of 3 x 10²³ molecules?

• 1.0 moles
• 2.0 moles
• 16.0 grams
• 32.0 grams

The total number of molecules in 34.0 grams of NH₃ is equal to 

• 1.00 x 22.4
• 2.00 x 22.4
• 1.00 (6.02 x 10²³)
• 2.00 (6.02 x 10²³)

What is the volume of 2 moles of gas at STP?

• 22.4 L
• 44.8 L
• 11.2 L
• 2 L