A: 48.0 mL volume of 0.25 M HBr is titrated with 0.50 M KOH. Calculate the pH after addition of 24.0 mL of KOH at 25 âC B: Consider the titration of 50.0 mL of 0.20 M NH3 (Kb=1.8Ã10â5) with 0.20 M HNO3. Calculate the pH after addition of 50.0 mL of the titrant at 25 âC.
C: A 30.0-mL volume of 0.50 M CH3COOH (Ka=1.8Ã10â5) was titrated with 0.50 M NaOH. Calculate the pH after addition of 30.0 mL of NaOH at 25 âC

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 electron configuration represents the electrons in an atom of sodium in the ground state at stp

Draw the lewis dot structure for each of the following polyatomic ions