Lactic acid is a weak acid found in milk. its calcium salt is a source of calcium for growing animals. a saturated solution of this salt, which we can represent as ca(lact)2, has a [ca2 + ] = 0.26 m and a ph = 8.78. assuming the salt is completely dissociated, calculate the ka of lactic acid!

answer: mercury

explanation:

answersilicon (si); oxygen (o);

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.