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Molecules and Compounds Homework Problem Set


  1. For the following molecules; write the chemical formula, determine how many atoms are present in one molecule, determine the molecular weight, determine the number of moles in exactly 1 gram, and the number of moles in exactly 10-6 gram.
    1. carbon dioxide
    2. iron (II) chloride
    3. zinc (I) oxide
    4. dinitrogen pentoxide
    5. potassium fluoride
    6. dihydrogen monoxide
    7. iron (III) sulfate
    8. lithium acetate
  2. Name the following compounds, determine the molecular weight, determine the percent composition, and determine how many moles in 8.35 grams of the compound.
    1. KI
    2. CaF2
    3. Cu2SO4
    4. Cr(NO3)6
    5. NO
    6. NO2
    7. N2O
    8. N2O4
    9. LiOH
    10. SO2
  3. Give the chemical formula (or atomic symbol), molecular (or atomic) weight, and charge for the following ions:
    1. sulfate
    2. sulfite
    3. nitrate
    4. hydroxide
    5. nitrite
    6. chloride
    7. nitride
    8. bromide
    9. acetate
    10. carbonate

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