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Physical chemistry- basics

  1. Sep 13, 2008 #1
    Ok so I just started this course and we have to so review from first year stuff but I am completely lost and have no idea how to do the questions. There are a bunch so could someone just run through one with me please?

    Commercial aqueous nitric acid has a density of 1.42g/mL and is 16.0mol/L HNO_3(aq). Calculate the molality, mass % and mole fraction of the HNO_3 present.

    I dont understand because I thought there needed to be a solute and a solvent but here it seems like its asking about just one thing.
  2. jcsd
  3. Sep 13, 2008 #2


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    Aqueous nitric acid means nitric acid (solute) dissolved in water (solvent). The term aqueous means that the solvent is water.
  4. Sep 15, 2008 #3
    ok so HNO_3 + H_2O -----> NO_3- + H_3O+

    Im sitll confused how the initial values are linked I'm getting extremely frustrated I'm falling behind because I cannot figure out the basics. PLease go through it with me!
  5. Sep 15, 2008 #4
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