Consider a volume of dry air (Ma = 28.97 g mol" ) at a temperature of 283 K with a number density n of 1.89 x 1025 molecules mo. Calculate the following: (a) The air pressure; (b) the mass density (in kg mos); (c) the average kinetic energy per molecule; and (d) the root mean squared (RMS) velocity of the molecules [i.e. the square root of the mean squared velocity]. (NOTE: Ma = mNA, is the molar mass of dry air where m is the average mass per molecule and NA is Avogadro's number.)