What is the ppm of 4.50mg of ddt in 10kg of seal fat?

Answer 1

I think I worked this problem for you about a week or so ago.

Answer 2

no that was a molarity problem

Answer 3

Here it is by FF but with you using so many screen names one never knows. As I said above, using the same screen name helps us help you and changing names helps no one.
http://www.jiskha.com/display.cgi?id=1417667658