What is the density (g/L) of a C8H15N3O5 in the gas phase at 3.32 atm and 25.15 oC?

a:

by the combination of an unlimited number of elements

a

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.