Salts of metals can be made by reacting one of the metal's compounds with the appropriate acid.
Plan an experiment to prepare pure, dry crystals of magnesium sulfate, MgSO,, by reacting a suitable magnesium compound with a suitable acid.

You may use equations if you wish.

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answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.