Wellnertal Equallons
Instruction Active
Calculating Enthalpy of Reaction
Ammonia (NH3(g). AH = -46.19 kJ/mol) reacts with hydrogen chloride (HCI(9), AH = -92.30 kJ/mol) to
form ammonium chloride (NHCl(s). AH = -314.4 kJ/mol) according to this equation:
NH3(9) + HCl(9) ► NH4Cl(s)
What is AHan for this reaction?
DONE

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.