Posted by Chamel on Thursday, December 10, 2009 at 12:11pm.
Isn't an amp a coulomb of electrons?
number electrons=1coulomb/charge on each electron
Now, after you figure that out, multiply it by 4.5*8000 to get the number of electrons.
Thence, divide it by avagradros number to convert it to moles of electrons.
It appears the chronium went from +6 to +5, or each ion taking on one electron.
That number of moles of electrons is the same number of moles of CrO4 -2 ions, so what is the mass of that?
Related Questions
Chemistry again - Two voltaic cells are to be joined so that one will run the ...
CHEMISTRY - Given the following standard reduction potentials in acid solution...
Chemistry - In basic solution, H2O2 oxidizes Cr+3 to Cro4^-2 and is reduced to ...
Chemistry - A voltaic cell utilizes the following reaction and operates at 298K ...
Chemistry - A voltaic cell utilizes the following reaction and operates at 298K ...
ap chemistry - A voltaic cell made of a Cr electrode in a solution of 1.0 M in ...
Chem - This is the problem: In a 1-L beaker, 203 ml of 0.307 M ammonium chromate...
chemistry - In a particular redox reaction, Cr is oxidized to CrO4^2– and ...
Chemistry - Chromium is electroplated from an aqueous solution containing H2SO4 ...
Chemistry - A current of 5.18 A is pass through a Cr(NO3)2 solution for 1.20 ...
For Further Reading
