Converting Into and Out of Moles

Which of the following dimensional analysis setups will correctly convert 27.76g of Li to atoms of Li?

• A
• B
• C
• D

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 are the units for molar mass?

• grams
• amu
• grams per mole
• liters

Tags

NGSS.HS-PS1-7

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 are in 16.94 g of water?

• 16.94 mol H₂O
• 0.9401 mol H₂O
• 305.3 mol H₂O
• 1.063 mol H₂O

Tags

NGSS.HS-PS1-7

How many molecules are in 9.44 moles of AlCl₃?

• 5.68 molec AlCl₃
• 5.68x10²⁴ molec AlCl₃
• 1.25 molec AlCl₃
• 1.25x10²³ molec AlCl₃

Which of the following would have the highest number of moles?

• 4 g CO₂
• 15 g H₂O
• 22 g NaCl
• 100 g AgCl

How many molecules are in 25 mol of NaCl?

• 1.51x10²³
• 146
• 4.15
• 1.51x10²⁵

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