Other questions in this quiz

2. Define the term empirical formula

  • The formula telling you exactly how many elements are there
  • The formula of how many atoms of an element are present
  • 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

3. 0.129g of CH4 fills a 200cm^3 container at 25degrees and 100KPa. Calculate Mr of methane

  • 16g
  • 1.04g

4. The number of ions is 8.55g of Al2(SO4)3 (molar mass 342.3gmol-1) is

  • 7.5 x 10^22
  • 0.025
  • 1.5 x 10^22
  • 0.125

5. Calculate the volume of CO2 produced from 10000 tonnes of Fe2O3 [1 tonne = 10^6g]

  • 1.504 x 10^12
  • 1.504dm^3

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