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Quantitative Chemistry

  1.  
    Work out the formula mass of CaO
    A. 28 B. 56 C. 24 D. 54
  2.  
    If you wanted to work out the number of moles what calculation would you use?
    A. mass divided by moles B. mass multiplied by relative formula mass C. mass divided by relative formula mass D. relative formula mass divided by mass
  3.  
    The percentage yield will always be _____________ 100%
    A. less than B. half of C. higher than D. equal to
  4.  
    Work out the percentage by mass of C in CO
    A. 0.57% B. 0.54% C. 0.50% D. 0.43%
  5.  
    Two or more elements or compounds mixed together are called a __________.
    A. compound B. element C. mixture D. oxide
  6.  
    A _____________ can be performed to calculate the concentration of a solution.
    A. filtration B. separation C. titration D. distillation
  7.  
    What number needs to replace the question mark to balance the equation?
    A. 2 B. 1 C. 3 D. 4
Answer Key
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Quantitative Chemistry (Answer Key)

  1.  
    Work out the formula mass of CaO
    A. 28 B. 56 C. 24 D. 54
  2.  
    If you wanted to work out the number of moles what calculation would you use?
    A. mass divided by moles B. mass multiplied by relative formula mass C. mass divided by relative formula mass D. relative formula mass divided by mass
  3.  
    The percentage yield will always be _____________ 100%
    A. less than B. half of C. higher than D. equal to
  4.  
    Work out the percentage by mass of C in CO
    A. 0.57% B. 0.54% C. 0.50% D. 0.43%
  5.  
    Two or more elements or compounds mixed together are called a __________.
    A. compound B. element C. mixture D. oxide
  6.  
    A _____________ can be performed to calculate the concentration of a solution.
    A. filtration B. separation C. titration D. distillation
  7.  
    What number needs to replace the question mark to balance the equation?
    A. 2 B. 1 C. 3 D. 4

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