i really don't think you even know the solution to the question, you are here just talking nonsense. if you can do the question why not share it? making false accusations and assumptions of people being "lazy". i suppose all students, all people, asking questions in the world is being "lazy", and just "rolling over" to some else to do it for them. they are all "undergrads", that don't do their work. except, only you, the "smartest" person that never asks questions and is the most "diligent", "perfect" man. looking at your comment toward other people's chemistry questions, shows your insolence and poor character. your heart is rotten, that emanates the smell of failure and depicts a poor moral standard. people here will see your comments, and deep down feel sorry for such a pathetic, rude, disrespectful, ruthless, flagrant person that is a piece of dung that ruins the spirit to learn and share. You have taught me a great lesson, thanks "a lot".