Use this equation and answer the following questions: 2C2H6 + 702 + 4CO2 + 6H20
1) How many grams of water would you get from 4 moles of C2H6?
2) How many grams of C2H6 would you need to produce 3 moles of water?
3) How many moles of water could you get from 80g of oxygen?
Balance this equation and answer the following questions:
Ca + 2H20 + Ca(OH)2 + H2
4) How many grams of Ca would you need to produce 43g of hydrogen?
5) How many moles of water do you need to produce 98.0g calcium hydroxide?

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.

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Label a-f based on the table using c for concentrated and d for dilute