The composition of moist air is given on a molar basis as 78 percent N2, 20 percent O2, and 2 percent water vapour. Thus, when determining the mass fractions of air components, we can say that: (a) The molar mass of the mixture is 15.0 kg/kmol.
(b) The molar mass of the mixture is 7.2 g/mol.
(c) The molar mass of the mixture is 15.0 kg/kmol only for a temperature of 273.15K and a pressure of 1 atm.
(d) None of the above.

Could someone solve and explain in detail?

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.

Identify two types of chemical bonding in the source of dietary potassium

Which statement describes james chadwick’s discovery.