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6. The equation to work out the number of moles in a mass is mass/RAM

  • True
  • False

7. Avogadro's constant is also called a...

  • Moal
  • Mole
  • Mass
  • Gas

8. What is the definition of relative atomic mass?

  • The weighted average mass of an atom of an element compared to 1/12th the mass of an atom of carbon-12
  • The average mass of an atom of an element compared to carbon-13
  • The mass of an atom of an element compared to 1/12th the mass of an atom of carbon-12
  • The weighted average mass of an element compared to carbon-12

9. The definition of concentration is..

  • How much solute is present in a solution
  • The solute dissolved in the solvent
  • A solid that dissolves

10. When using the ideal gas equation, the pressure must be in..

  • atm
  • Pa
  • kPa

11. Which of these is NOT a reason why a percentage yield of a reaction may be below 100%?

  • Decomposition
  • Crystals were not dry
  • Losing crystals by spittng
  • Transfer error

12. Which of these is not a source of error in experiments?

  • Reaction
  • Procedural
  • Apparatus

13. Why is it important to do at least one rough titration?

  • To ensure your results are concordant
  • To work out the approximate value of the end point
  • To calculate a mean