Other questions in this quiz

2. When 7.95g of copper(II) oxide, CuO, was reacted with excess sulfuric acid and the resulting solution filtered and allowed to crystalise, 23.0g of hydrated CuSO4.5H2O were produced. The percentage yield is

  • 109
  • 69
  • 92
  • 34

3. Calculate the atom economy for this reaction

  • 84.2%
  • 72.7%

4. Define the term empirical formula

  • The formula telling you exactly how many elements are there
  • The simplest whole number ratio of atoms of each element present in a compound
  • The simplest form of the composition of elements in a compound
  • The formula of how many atoms of an element are present

5. The formula of a carbonate ion is

  • CO3^2-
  • CO3-
  • HCO3-
  • HCO3^2-

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