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A 100.0 mL portion of 0.250 M calium nitrate solution is mixed with 400.0 mL of .100M nitric acid solution. What is the final concentration of the nitrate ion?

  • chemistry -

    Ca(NO3)2: nitrate ion .5M, so you have .05moles
    HNO3: nitrate ion, .1M, so you have .04moles

    Nitrate ion concentration=(.09)/.5L=.18M

  • chemistry -

    where did you get the .5M from?
    Ca(NO3)2 is .25M

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