[MrHappy0]

A solid is dissolved in 20ml of H20. 5ml aliquot is removed and diluted to 100ml. The ppm of the desired analyte is determined. Determine the initial concentration of the analyte.

I did not add specifics. I would just like a general step by step help for this problem.

My attempt:
xppm(100gH20)/10^6=xgram analyte

analyte/MW analyte= x moles of analyte...

x moles of analyte/20ml = initial conc.

For some reason this isn't working and I feel quite pathetic!

[MrHappy0]

Pathetic is right!

dilution factor should have been used for the 5ml to 100ml dilution but I kept trying to use it for the actual removal of the aliquot.

Move on folks! Nothing to see here!

[magician4]

sometimes even just writing down what your problem seems to be will solve it , all by itself, for you

happy you


<-- moving on


still have a nice evening!

Ingo

[curiouscat]

sometimes even just writing down what your problem seems to be will solve it , all by itself, for you

So often true!