The lethal inhalation dose of sarin for a 200lb person has been determined to be 0.0015 mg. Determine the LD50 of sarin that researchers used to calculate this lethal inhalation dose.
A. 1.4 x 10-4 mg/kg
B. 0.16 x 10-4 mg/kg
C. 1.8 x 10-5 mg/kg
D. 0.00023 mg/kg
If we know a calculated lethal dose of a poisonous gas, how can we find the known LD50 value of that gas?