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6. The equation to work out the number of moles in a mass is mass/RAM
7. Avogadro's constant is also called a...
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..
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