Aconcentrated strong acid is added to a solid mixture of 0.015mol samples each of fe(oh)2 and cu(oh)2 placed in 1.0l of water. at what values of ph will the dissolution of each hydroxide be complete? (assume negligible volume change.)

answer is d because it is trust me

h let me think

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.