Can you please show how to do the work.

Chemical X is placed in a beaker containing soil and water. At equilibrium, the chemical is found in the soil at a concentration of 100mg/kg of soil. The equilibrium concentration of this same chemical in the water is 0.2mg/L. Assuming linear partitioning, what is the partition coefficient for this chemical on this soil? 500(mg/kg)/(mg/L) 250(mg/kg)/(mg/L) 1000(mg/kg)/(mg/L) 750(mg/kg)/(mg/L)