Dentify the major ionic species present in an aqueous solution of H2SO4

One student said that the investigation was not valid (a fair test). write a plan for the investigation that includes improvements to the method and apparatus

What do lines in an elements line spectrum represent?

When preparing a tlc slide of a reference standard material (rsm), a solvent or mixture of solvents is used to dissolve the rsm and transfer it into the tlc plate. how does its polarity affects the rf of the rsm? the rf will increase depending of it polarity, but never decrease it does not affects it since the solvent evaporates before the insertion of the tlc slide in the jar a polar solvent will definitively reduce the retention factor a polar solvent will increase rf