pleaseee help

Question 1 A small perfume bottle is opened at the center of a room filled with still air at a time t = 0. Which equation governs the progress of the perfume from the bottle? (3, rgand mare the mean square distances traveled in time t, and D is the diffusion coefficient of the dye molecules in the water.) Question 2 _ Only one of the statements below is correct: which one? 0 glycerol molecules are osmotically active for red blood cells. 0 Two solutions are hypertonic when they have the same osmotic pressure. 0 A red blood cell placed in a isosmotic solution will shrink. O A red blood cell placed in a hypotonic solution will swell