Chemistry Unit 6 Mole and Percent Composition Quiz

What is the molar mass of NaCl?

• 40.08 g/mol
• 12.01 g/mol
• 23.00 g/mol
• 58.44 g/mol

What is the molar mass of NaOH?

• 32.00 g/mol
• 40.00 g/mol
• 56.00 g/mol
• 23.00 g/mol

What is the molar mass of H20?

• 10.01 g/mol
• 18.02 g/mol
• 22.5 g/mol
• 36.04 g/mol

What is the molar mass of Mg?

• 24.305 g/mol
• 32.065 g/mol
• 16.00 g/mol
• 12.011 g/mol

What is the molar mass of H2SO4?

• 98.08 g/mol
• 84.06 g/mol
• 120.05 g/mol
• 63.01 g/mol

What is the molar mass of Cl2?

• 60.32 g/mol
• 70.90 g/mol
• 35.45 g/mol
• 45.67 g/mol

What is the molar mass of C6H12O6?

• 90.08 g/mol
• 150.12 g/mol
• 120.10 g/mol
• 180.16 g/mol

What is Avogadro's Number?

• 6.022 x 10^23
• 4.022 x 10^23
• 7.022 x 10^23
• 5.022 x 10^23

What is the percent composition of N2S2?

• 50% nitrogen

  50% sulfur.

• 28.1% nitrogen

  71.9% sulfur

What is the percent composition of HCl?

• Hydrogen - 3%

  Chlorine - 97%

• Hydrogen - 50%

  Chlorine - 50%