Density of CrO4 and CrO7

<[email protected]> 13 Dec 2013 01:31:47 -0800
Newsgroups gmane.science.chemistry.the-chemistry-cluster
Message-ID <[email protected]>
  How can we calculate Density of CrO4 and CrO7 in a Solution of both ions with UV-Vis method , can anyone help ? TNX