issue

  1. E

    Conversion issue on Acids and Titratable acidity

    Hi All I am new here. I have one problem that I would greatly appreciate your help.I have data of citric acid (dominant acid) and two other acids (malic and glutamic)of a certain garden fruit measured by spectrophometric method and they are given in mg/gfw which is "miligram per gram of...
  2. S

    Kinetin solubility issue

    Hi friends I am new to this forum, I have a problem with kinetin solubility. As per the info it is soluble in koh and naoh, I tried to solubalize it in koh but it does not dissolve completely, Need suggestions Thanks
  3. D

    Issue Determining delta E using Bohr

    This is the question I'm having trouble this. My professor is claiming that the answer is #3, but I am NOT getting that. I am assuming the nucleus charge is 2 - which gives me answer #4. This is what I'm doing - delta E = -2.18E-18 (2^2) (1/9-1/4) = 1.21x10^-18 I even tried the nucleus...
  4. H

    which acids dissolve&melt rocks?gold refinery & mining issue...

    Hi everybody ! I wonder are there any strong acids that can melt&dissolve hard rocks but not metals like gold.I found some rocks that contain gold metal and I want to get the gold out of the rock.You can even see the gold metal with naked eye,however conventional or classical methods are too...