How many pints of each 2 percent and 7 percent acid solutions must be mixed to obtain 50 pints of a 5 percent solution? A Video response to the question from Socratic.org. File can be downloaded here (Dropbox Folder). Related Concentration Picket fence 1 Picket fence 2 Learn ChemE Continue reading Determining Mixing Volumes
This is a video response to a question from Socratic.org: http://socratic.org/questions/how-does-linear-regression-work-in-excel-2013 You can download the xlsx workbook here (Dropbox Folder) Continue reading Boiling point of alkanes
Craig Venter: I was asked earlier whether the goal is to dissect what Schrödinger had spoken and written, or to present the new summary, and I always like to be forward-looking, so I won’t give you a history lesson except for very briefly. I will present our findings on first on reading the genetic code, and then learning to synthesize and write the genetic code, … Continue reading What is life ? A 21st century perspective
Millions of lives were lost in the civil wars. For men may come and men may go, wars seem to go on for ever. Read more from ‘The Economist’. Europe’s arms trade Related Drone strikes Continue reading Wars – a blight on humanity
Randy Pausch’s talk on achieving his dreams. Towards the end of the talk Randy says that we can not do it all alone and we need help there: tell the truth be earnest apologise when you screw up focus on others, not yourself don’t bail; the best gold is at the bottom of barrels of crap get a feedback look and listen to it.The hard part is … Continue reading Achieving childhood dreams
Weekly challenge from King’s college mathematics school can be viewed here. Chemistry challenge from Cambridge University can be viewed here. 2014 UK Chemistry olympiad can be viewed here. Continue reading Challenge ?
How winged creatures play a vital role in pollination. Continue reading Wings of Life