Which is the least expensive source of enery in kilojoules per dollar, a box of breakfast cereal that weighs 32 ounces and costs $4.23, or a liter of isooctane (density 0.6916 g/ml) that costs $0.45? compare the nutritionl value of the cereal with the heat produced by combustion of the isooctane under standard conditions. a 1.0 -ounce serving of the cereal provides 130 calories

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.

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?