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how much of each of the following substances would you add to water to prepare 1.20L of a .85M solution? (sodium carbonate from the pure solid) ? I am stuck on how to work this one out, too. thanks

  • chem -

    You need mols Na2CO3 = L x M = 1.20 x 0.085 M = ??
    mols Na2CO3 = g/molar mass
    easier than the last one.

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