Phosphorus pentachloride, a white solid that has a pungent, unpleasant odor, is used as a catalyst for certain organic reactions. Calculate the number of moles in 38.7 g of phosphorus pentachloride. Select one: A. 0.282 mol B. 3.55 mol C. 5.38 mol D. 0.186 mol E. 0.583 mol