1. (a) Compute the rams speed of a gas of helium arums at 300 K. (b) AI whale lempira Urea will oxygen molecules have the same rams speed? (c) Through wharf potential difference must a singly ionized oxygen molecule be accelerated 10 have I he same speed? 2. (a) How many molecular impacts are made per second on each square centimeter of a surface exposed 10 air al a pressure of 1 arm and al 300 K? The mean molecular weight of air is 29. (b) Whale would be the length of a cylinder 1 cm' in cross section containing the number of air molecules are arm and 300 K which collide with a surface 1 cm2 in one second?