Answer :
Final answer:
To calculate the LD50 for a 157-lb person for aspirin, convert the person's weight to kilograms and multiply it by the LD50 value. The LD50 value for aspirin is 1100 mg/kg.
Explanation:
In order to calculate the number of grams needed to provide the LD50 for a 157-lb person, we need to convert the person's weight from pounds to kilograms. Using the conversion factor 1 lb = 0.454 kg, we find that the person's weight is approximately 71.21 kg.
To calculate the LD50 for aspirin in grams, we multiply the LD50 value (1100 mg/kg) by the person's weight in kilograms (71.21 kg) and divide by 1000 to convert from milligrams to grams. The calculation would be:
LD50 (aspirin) = (1100 mg/kg) * (71.21 kg) / 1000 = 78.331 grams
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