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Given Zn(NO3)2 + (NH4)2S = ZnS + 2NH4NO3 (molar mass of Zn(NO3)2 189 g, molar mass of (NH4)2S 68 g), what is the molarity of a 250 ml solution if you have 123 g of zinc nitrate?

  • Chemistry -

    Moles zinc nitrate = grams zinc nitrate/molar mass.
    M = moles/L.

    I don't know what the equation has to do with the post. Please let me know if I have interpreted the problem incorrectly.

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