[mike89]

can someone help me with these...i have 8.66 mg kg-1 want to convert to ug g-1.. 
and do nickel ug/g normally high in clay? in any1 opinion...i'm very glad with u all respons
because i'm doing adsorption of nickel in clay...for some reason i just want to make sure..
i really appreciate your help...later~

[rabolisk]

Don't let the fact that it is a ratio throw you off. How do you convert hours to seconds? Also, how do you convert s^-1 to h^-1? The same principle can be used for this.

[mike89]

i do know to convert h to s...but i just don't know how to apply...if u don't mind..
can u show me an example or
can i know how much 1mg/kg in ug/g? it may be a little bit easier  i think..

[rabolisk]

First convert milligram to microgram. Then convert kilogram to gram. Now divide the first value by the second value.

[nj_bartel]

Let's try it with another set of units and see if you can transfer the idea.

10 s/hr into ? ms/min

(10 s/hr)(1000 ms/s)(1 hr/60 min) = 166.67 ms/min

Keep track of your units and convert one at a time.  You start with 10 s/hr.  We'll convert seconds, the numerator, first.  We want ms in the numerator, there are 1000 ms in a s, so we multiply by the factor 1000 ms/s.  Seconds cancel (s in the numerator initially, and dividing by s here), and we end up with ms in the numerator.  Same general principle for hr into min.