A) solve for the number of grams of Ca2+ ion in a solution prepared by adding 1 gram of calcium oxalate powder to 100 mL at pH 9. (B) explain what happens to the dissolved Ca2+ calculated before if you reduce the pH of this solution to 2.
a log that is 50 cm long is cut into 2 pieces one of the pieces is 8 cm shorter than the other one. how long is orginal log and if the original log is cut into equal pieces how long would each piece be
Concentrations of Cs-137 reached 29KBq/kg in reindeer meat after the 1986 Chernobyl accident. How many grams and picograms of Cs-137 were initially found in 1kg of meat in 1986?
Chemistry, Physics (Radiation Toxicology)
a) Na-22 decays in two ways. In 100 atoms of Na-22 decaying, how many would decay by positron emission and how many would decay by electron capture? Why is the yield of photon gamma (+/-) so high? b) In 100 decays of Ra-226, how many decays would result in emission of one phot...
I need 10 questions of how to prevent/help children from performing violent actions towards others at school