Based on the given bond energies, what is the enthalpy change for the chemical reaction? A. -352 kj

B. -210 kj

C. -176 kj

D. -105 kj

confused

confused             hewdejdnjnjsnd

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.