So I think I am doing my converting wrong.
The question asks to fins the wt% of Cd and ppm Cd in 170kL of water that contains 0.9ug Cd
I converted the water to 170,000,000mL and the Cd to 0.0009mg but that didn't work. I have tried Litres and grams as well but neither work. Know what I have done wrong?? NB: wt%=(mx/mtotal)x100

Question

So I think I am doing my converting wrong.
The question asks to fins the wt% of Cd and ppm Cd in 170kL of water that contains 0.9ug Cd
I converted the water to 170,000,000mL and the Cd to 0.0009mg but that didn't work. I have tried Litres and grams as well but neither work. Know what I have done wrong?? NB: wt%=(mx/mtotal)x100

anonymous · Answer

got the answer don't worry.
0.0000009
----------x100
1.7x10^8