i have 0.00100mgml-1 of quinine .?

Question

what concetration in ppm do i have if i dilitued 10 , 17 , 24, 31, 45, 52 and 62 mls of this solution to 100mls in a volumetric flasks ?

Answer 1

Suppose I have a solution of M mg/ml. I then take K ml of this solution and add this to L ml of the pure liquid.

In my K ml, I started with K x M mg of my substance and I end with K + L ml of solution.

So my concentration is (K x M)/(K + L) mg/ml