A0.200 g sample of magnesium and zinc is placed in a rigid 1 l vessel containing dry air at 25 °c and 1 atm. the magnesium and zinc are treated with dilute sulfuric acid to produce hydrogen gas according to the following balanced reactions: mg (s) + h2so4 (aq) → mg2+ (aq) + so42– (aq) + h2 (g) zn (s) + h2so4 (aq) → zn2+ (aq) + so42– (aq) + h2 (g) the hydrogen gas is then completely combusted in the same vessel to form water as a product. the vessel is then cooled back to 25 °c (assume that all the water condenses) and the pressure is found to be 0.95 atm. what is the mass percentage of magnesium in the mixture?

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.

What happens to the atomic radius when an elctron is lost

When a septic tank backs up a goes in to clean it out