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A certain volume of a .50 M solution contains 4.5g of a certain salt. What mass of the salt is present in the same volume of a 2.5 M solution?

Indicate the concentration of each ion/molecule:
A mixture of 50.0 mL of .2M KClO3 and 25.0 mL of a .20M Na2SO4.


How would you answer or set up these two problems?

  • ap chem -

    first one: do by proportion.

    4.5g/.5M = X/2.5 M

    second one. You have K+, ClO3-, Na+, and SO4-- ions.

    I will do one.

    concentration of Na+= 2*.2M

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