From owner-cellbiol@net.bio.net Wed Feb 26 22:00:00 1997 Path: biosci!rutgers.rutgers.edu!uwm.edu!cs.utexas.edu!howland.erols.net!rill.news.pipex.net!pipex!warwick!leicester!usenet From: "Dr E. Buxbaum" Newsgroups: bionet.cellbiol Subject: Re: ATP Date: 27 Feb 1997 11:06:22 GMT Organization: University of Leicester (PCFS User) Lines: 15 Message-ID: <5f3pre$67s@falcon.le.ac.uk> References: <19970225020600.VAA03644@ladder02.news.aol.com> NNTP-Posting-Host: pc47.msb.le.ac.uk Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 1.22 (Windows; I; 16bit) marckless@aol.com (Marc Kless) wrote: >I am a grade 11 biology student, and I was interested to find the formula >of ATP. I have a diagram, but I'm not sure that if I just count the >number of carbon, Nitrogen, Oxygen ect.. atoms that I will have the corect >formula. The form usually sold is the disodium salt of ATP: C10H14N5O13P3Na2 times 3 H2O. The MW is 605.2 You should get the same answer from counting the atoms in a structural formula, keeping in mind however that hydrogen atoms linkin to carbon are often not drawn. So count the bindings going to each C and if the number is not 4, make up the remainder with H. By the way, your teachers should realy have been able to show you how to do that. .