Explain HOW this chemical reaction is NOT balanced correctly. SiF4 + 2 H2O --> H4SiO4 + 2 H2SiF6

i would say b

explanation:

but i think i would need more information than that

football

explanation:

because it is

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.