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Homework Help: Need help on chemistry, solution problems.

  1. Sep 21, 2006 #1
    Hello, the question i have here is:

    Fifty millilitres of a 0.05M solution of Sodium Carbonate is added to 80mL of a 5% by mass solution containing Siliver Nitrate. The product of the reaction are solid Siliver Carbonate and a solution is evapourated to dryness, leaving a mixture of salts. How many grams of the salts, Sodium Carbonate, Siliver Nitrate, Siliver Carbonate, and Sodium Nitrate are present in the salt mixture?

    Note: Indicate any assumptions necessary in order to perform the calculations.

    The balanced chemical equation is Na2CO3 + 2AgNO3 = Ag2CO3 + 2NaNO3

    Na2CO3 = 106g/mol
    AgNO3 = 169.87g/mol
    Ag2CO3 = 275.74g/mol
    NaNO3 = 85.00g/mol

    i found out the moles of Sodium Carbonate to be 0.0025 mol.

    Then i'm stuck, thanks everyone.
  2. jcsd
  3. Sep 22, 2006 #2
    First of all, is it 5% mass by mass? or mass by volume?
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