16. what is the percentage of nitrogen in n2o? show all calculations leading to an answer. 17. how many non-bonding electrons does phosphorus have? 18. complete and balance this reaction: sulfuric acid reacts with barium chloride 19. identify the precipitate in this reaction: calcium nitrate reacts with sodium phosphate. 20. the following is a limiting reactant problem: magnesium nitride is formed in the reaction of magnesium metal with nitrogen gas in this reaction: 3 mg(s) + n2(g)  mg3n2(s) how many grams of product are formed from 2.0 mol of n2 (g) and 8.0 mol of mg(s)? show all calculations leading to an answer.

Dying the folding patterns of protein molecules can microbiologists better understand cellular processes as well as some diseases, such as alzheimer’s, that are caused by proteins that have misfolded. the folding of these complicated molecules can be simulated on computers, but it takes a lot of processor power and time for even expensive supercomputers to do this. a group of researchers at stanford university developed software that can be used to distribute the processing of data to anyone who is willing to donate time on their idle personal computers. as a result, the researchers have been able to achieve protein-folding simulations that are far better than those other computing methods have done. which statement best describes the work of these researchers? the work is not scientific because the data are not processed in one location. the work is not scientific because the simulations are not reproducible. the researchers applied creativity to solve a problem in running an experiment. the researchers used only well-established scientific techniques.

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The element that has the greatest electronegativity is