Diffusion between two gases occurs most rapidly if the gases areat a
a. low temperature and the molecules are small.
b. low temperature and the molecules are large.
c. high temperature and the molecules are large.
d. high temperature and the molecules are small.

An experimental procedure requires a 10 ml of acid to be dissolved

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

Which type of precipitation would most likely form when the surface air temperature is slightly below freezing and the air temperature increases as you move upward away from the ground?