Which of the following statements concerning the kinetic-molecular theory are correct?

(1) Particles of a liquid are closely spaced but are not confined to specific positions
(2) Particles in a solid vibrate back and forth about an average position
(3) A solid melts when its temperature is raised to the point at which the particles vibrate fast enough and far enough to push one another out of the ordered arrangement

A 2 and 3 only
В 10nly
C 2 only
D 1, 2, and 3
E 1 and 2 only

Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis

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.

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent