Mole Conversion Review

Which conversion factor should be used to solve the following, "How many moles are in 28 grams of CO₂?"

• 1 mol = 22.4 L 
• 1 mol = 44.01 g
• 1 mol = 6.02x10²³ atoms
• more than one

Which conversion factor should be used to solve the following, "Find the mass in grams of 2.00 x 10²³ molecules of F₂."

• 1 mol = 22.4 L 
• 1 mol = 38.00 g
• 1 mol = 6.02x10²³ atoms
• more than one

What is the molar mass of Hydrogen Peroxide (H₂O₂)?

• 48.10 g/mol
• 34.02 g/mol
• 36.54 g/mol
• 35.51 g/mol

How many moles of magnesium are in 3.01x10²² atoms of magnesium?

• 5.00x10⁴⁴ moles Mg
• 0.050 moles Mg
• 1.81x10⁴⁶ moles Mg
• 5 moles Mg

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

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

• 22.4 L
• 44.8 L
• 11.2 L
• 2 L

You have 3.5 L of H₂ (g) at STP. How many moles of gas are there?

• 22.4 mol
• 22.4 L
• 0.16 mol
• 0.16 L

A sample of carbon dioxide at STP is 0.50 L. How many grams of carbon dioxide do we have?

• 0.48 g

• 0.49 g

• 1.96 g

• 0.98 g

How many moles of methane gas molecules, CH₄, are in 12 liters of methane at STP?

• 11.2 moles

• 0.5 moles

• 179.2 moles

• 27.2 moles