If it take 87 mL of 6.4 M Ba(OH)2 solution to completely neutralize 5.5 M of HI solution, what is the volume of the Hl solution needed?

Ions gain or lose electrons

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Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.