Mole concept introductions

What is a mole?

• 6.022 x 10²³

• Avogadro's Constant

• A word that denotes a number

• All options are correct

What is the molar mass of Lithium (Li)?

• 6.94 g

• 6.94 g/mol

• 13.88 g

• 13.88 g/mol

What is the molar mass of oxygen (O₂)?

• 15.999 g

• 15.999 g/mol

• 31.998 g

• 31.998 g/mol

What is the molar mass of carbon dioxide (CO₂₎?

• 12.011 g/mol

• 15.999 g/mol

• 28.01 g/mol

• 44.009 g/mol

Convert 10g of carbon dioxide to moles.

M(CO₂) = 44.009 g/mol

• 0.23 mol

• 224 mol

• 440.09 mol

• 6.022 x 10²⁴ mol

How many atoms are present in 1.08 mol of Zinc (Zn)?

• 25.92 atoms

• 70.6 atoms

• 1.79 x 10^-24 atoms

• 6.5 x 10²³ atoms

How much volume (in dm³) would 0.03 mol of ammonia (NH₃) occupy at rtp?

M(NH₃) = 17.031 g/mol

• 0.51 dm³

• 0.672 dm³

• 0.72 dm³

• 0.85 dm³

What is the mass of 0.086 mol of sodium hydroxide (NaOH)?

M(NaOH) = 40 g/mol

write the units with the answer

Convert 2.37 x 10²³ formula units of sulfuric acid (H₂SO₄) to moles.

M(H₂SO₄) = 98.036 g/mol

Write the units with the answer

Write your answer to 2 decimal place

Convert 0.007 mol of hydrogen chloride gas (HCl) to volume (in ml) at rtp.

M(HCl) = 36.458 g/mol

Write the unit with the answer