You need to make 10.0 L of 1.2 M KNO3 solution. What molarity would be the concentrated potassium nitrate solution need to be if you were to only use 2.5 L of it making the new solution?

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You need to make 10.0 L of 1.2 M KNO3 solution. What molarity would be the concentrated potassium nitrate solution need to be if you were to only use 2.5 L of it making the new solution? 

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