Chem Honors Molar Mass/Mole Conversions Assessment

What is the mass of 3.0 x 10²³ moles of neon?

• 6.0 x 10²³ grams

• 6.0 x 10²⁴ grams

• 1.5 x 10 ²² grams

• 3.0 x 10²⁴ grams

The gram formula mass (molar mass) of NH₄Cl is

• 22.4 g/mol

• 28.0 g/mol

• 53.5 g/mol

• 95.5 g/mol

Which quantity in moles that is equivalent to 39 grams of LiF?

• 1.0 mole

• 0.50 moles

• 2.0 moles

• 1.5 moles

What is the molar mass of potassium carbonate, K₂CO₃ ?

• 138 g

• 106 g

• 99 g

• 67 g

What is the total mass in grams of 0.75 moles of SO₂?

• 16 g

• 24 g

• 32 g

• 48 g

How many atoms are in 4.5 moles of copper?

• 4.5 atoms

• 6.022 x10²³ atoms

• 2.7 x10²⁴ atoms

• 1.34 x10²³

A tube with a volume of 156 L contains how many moles of Helium?

• 58.6934 mol

• 3494.4 mol

• 6.964 mol

• 2.6579 mol