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Homework Help: New Chem undergrad

  1. Sep 20, 2008 #1

    This is my first science subject ever, and I am having difficulties so I would love to have all the help I can get please.
    My assignment is about Lewis structures and empirical formula for the following

    1. The problem statement, all variables and given/known data
    1.potassium iodine, 2. calcium flouride, (these two are ionic compounds)
    3. sulfur chlorine ( covalent compound)

    Write both an equation using Lewis structures and a balanced chemical equation for the ff reaction
    1. Silicon atoms and chlorine molecules
    2. Lithium atoms and bromine molecules
    3. Ethylene molecules (C2H4) and chlorine molecules; the product is C2H4Cl2

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Sep 20, 2008 #2
    You need to attempt the question and let us know where your stuck. No one will do the work on here for you. We need to understand the material. :)
  4. Sep 20, 2008 #3
    Emp form Lewis
    potassium iodine - potassium iodide KI K. .. I.
    calcium flourine - calcium chloride CaCl .Ca. ..Cl..
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