The extraction of aluminum metal from the aluminum hydroxide found in bauxite by the hall-héroult process is one of the most remarkable success stories of 19th century chemistry, turning aluminum from a rare and precious metal into the cheap commodity it is today. in the first step, aluminum hydroxide reacts to form alumina and water: in the second step, alumina and carbon react to form aluminum and carbon dioxide: suppose the yield of the first step is and the yield of the second step is . calculate the mass of aluminum hydroxide required to make of aluminum. be sure your answer has a unit symbol, if needed, and is rounded to significant digits.

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 is the overall order of reaction for rate = k[no]2[o2]

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3 -> a2cr(no3)3 + a3ag2so4