Question

What does `"ppm"` mean with respect to concentration?

Answer 1

You have not specified a question..........

Explanation:

`"Concentration"-="Amount of substance"/"Volume of solution"`, and typically we get units of `mol*L^-1` or `g*L^-1` (note `1*mg*L^-1-="1 ppm"`). Anway we need some context to address what you want to know.