A 0.62g sample of sodium hydroxide and sodium carbonate and inert material was dissolved and required 30.00cm^3 of HCl to reach the phenolphthalein end point. Methyl orange point was added and 6.50cm^3 more HCl was required to reach the methyl orange point, if the HCl was 0.24M, calculate the percentage of sodium hydroxide and sodium carbonate in the sample.

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.

Which traits do human embryos have that link them to a common ancestor with fish and reptiles? a. scales and tail b. gill slits and scales c. tail and gill slits d. hair and tail

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.