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Homework Help: Stoichometry Help

  1. Sep 12, 2010 #1
    1. The problem statement, all variables and given/known data

    Elemental (metallic) aluminum (Al) is reacted with HCl to yield aluminum chloride (AlCl3) and hydrogen gas (H2). How many grams of metallic aluminum would be required to produce 1 gram of pure hydrogen gas?


    2. Relevant equations

    Al + HCl --> AlCl3 + H2

    Balance Reaction: 2 Al + 6 HCl --> 2 AlCl3 + 3 H2



    3. The attempt at a solution

    let Z = the amount of Al needed

    Z g Al * (1 mol Al / 26.98 g Al) * (3 mol H2/2 mol Al) * (2.02 g H2/1 mol H2) = 1 g H2

    (6.04764 * Z) / 53.96 = 1

    Z = 8.922 g Al

    I was hoping someone could look over this and see if did the correct process and came up with the right answer.

    Thanks!
     
  2. jcsd
  3. Sep 12, 2010 #2
    You're correct
     
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