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Posted by on Wednesday, September 11, 2013 at 10:28pm.

A solution is made by mixing 90.6 g of magnesium sulfate heptahydrate with 2320.0 g of water.
690.00 mL of the solution has a mass of 745.20 g.

1. What is the molarity of the magnesium sulfate solution?

2. What is the molarity of the magnesium ion?

3. What is the molality of the magnesium sulfate solution?

  • Chemistry - , Wednesday, September 11, 2013 at 10:36pm

    See your post bedlow for #1.
    2. MgSO4.7H2O has 1 mol Mg for each mols MgSO4.7H2O; therefore, M mg^+ = M MgSO4.7H2O

    3. m = mols MgSO4.7H2O/kg solvent.
    Post your work if you get stuck.

  • Chemistry - , Wednesday, September 11, 2013 at 10:40pm

    The post that I followed for #1 ended up with the wrong answer

  • Chemistry - , Wednesday, September 11, 2013 at 11:15pm

    Let me look at how you arrived at the answer.

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