Which of an atoms electrons are involved in chemical reactions

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

What is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added

You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.