Three elements, A, Q, and Z, have the molar masses indicated in the table below. Given a compound with a composition of 42.6% A and 57.4% Z by mass, what is the empirical formula of this compound? Remember to enter subscripts as normal numbers (ie H2O is entered as H2O) and to enter elements in the same order they were given.

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

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.

Will a solution form when the solvent and solute are both nonpolar? a. not likely b. never c. most likely