A 1000 m3 lake contains 1000 fish and 1 g of DDT. The average volume of the fish is 100 cm3. If the fish are 5% lipids, and if we can assume that the DDT partitions into the fish exactly as it does into octanol, what is the equilibrium DDT concentration in the fish

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

the answer is 1 i believe