A first-order reaction has a half-life of 19.6 ss . How long does it take for the concentration of the reactant in the reaction to fall to one-sixteenth of its initial value

ill try to . no promises tho.

explanation:

може ли да зареждате повече информация, моля

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.  

hypostyle hall;