(Express powers of 10 with a small "e". So for 1200 write 1.2e3. Give your answer to 2 significant figures.) A. A common small-molecular weight (and therefore fast diffusing for an organic molecule) ingredient in perfumes is vanillin, the primary component of vanilla bean extract (molecular weight = 152). The D for vanillin in air is 0.114 cm?/s. If I open a bottle of vanilla on the other side of the room 3 meters away, and the air is still so there is no convection, about how long would I have to wait before I could expect to smell the vanilla? seconds B. The diffusion constant for glucose in water is 0.70 x 10 cm/s. About how much time would it take to get significant diffusion across the following structures? Assume that glucose diffuses through cells and membranes as fast as it does through water. across a cell membrane 8 nm thick seconds from the center of a eukaryotic cell 6um in radius to the cell membrane seconds across the wall of the human heart 2.5 cm in thickness seconds from the cells in the center of the cactus to the photosynthetic cells on the surface of a barrel cactus if the cactus has a radius of 12 cm seconds