REVIEW QUESTIONS
Chapter 5

  1. Two samples of a compound containing carbon and chlorine are decomposed and the following data was obtained:
Sample 1 38.9 g C 448 g of Cl
Sample 2 14.8 g C 134 g of Cl
Based on the data obtained, are these samples the same compound? Show why or why not.
Compare the % C in the two samples to see if these are the same compound or not: in sample in sample
Alternately,
Therefore samples are not the same compound
2. A 7.83 g sample of HCN contains 2.90 g of H and 4.06 g of N . Find the mass of carbon in a sample of HCN with a mass of 3.37 g .
mass of carbon in sample
  1. For the compounds listed below, determine the number of elements and the total number of atoms in each:
    a) # of elements: 5 # of atoms: 45
    b) # of elements: 4 # of atoms: 19
    c) # of elements: 5 # of atoms: 21
  2. Complete the table below with the missing information:
Formula No. of ions
No. of Oxygen
atoms
No. of Hydrogen
atoms
  1. Name each compound shown below:
    a) potassium chlorate
    b) iron (III) hydroxide
    c) silver sulfide
    d) bromine pentafluoride
    e) lead (IV) carbonate
    f) nitrogen triodide
  2. Write formula for each compound below:
    a) copper(II) chlorite
    b) tetraphosphorus triselenide
    c) iron(II) phosphate
    d) magnesium nitride
    e) ammonium carbonate
  3. Is each name correct for the given formula? If not, provide the correct name.
    a) hydrogen nitrate nitric acid
    b) ealcium diiodide calcium iodide
    c) lead(II) carbonate lead(IV) carbonate
    d) phosphorus chloride phosphorus pentachloride
  4. Complete the table below with the missing information:
Formula Type of Compound (Ionic, Molecular, Acid) Name
molecular dinitrogen tetrahydride
ionic potassium nitrate
acid carbonic acid
CBr4 molecular carbon tetrabromide