Substances x and y are both nonpolar. if the volatility of x is higher than that of y, what is the best explanation?
x’s molecules experience stronger dipole-dipole forces than y’s molecules.
y’s molecules experience stronger dipole-dipole forces than x’s molecules.
x’s molecules experience stronger london dispersion forces than y’s molecules.
y’s molecules experience stronger london dispersion forces than x’s molecules. r

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.

The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?