An English unit of mass used in pharmaceutical work is the grain (gr). 15 gr=1.0

Question

An English unit of mass used in pharmaceutical work is the grain (gr). 15 gr=1.0g. An aspirin tablet contains 5.0 gr of aspirin. A 155-lb arthritic person takes a dosage of 2 asprin tablets per day.
a. What is the quantity of aspirin in two tablets, expressed in mg? b. What is the dosage rate of aspririn, expressed in mg aspirin per kg of body weight? c. At 2 aspirin tablets per day, how many years does it take for a person to consume 1.0 lb aspirin? An English unit of mass used in pharmaceutical work is the grain (gr). 15 gr=1.0g. An aspirin tablet contains 5.0 gr of aspirin. A 155-lb arthritic person takes a dosage of 2 asprin tablets per day.
a. What is the quantity of aspirin in two tablets, expressed in mg? b. What is the dosage rate of aspririn, expressed in mg aspirin per kg of body weight? c. At 2 aspirin tablets per day, how many years does it take for a person to consume 1.0 lb aspirin?
a. What is the quantity of aspirin in two tablets, expressed in mg? b. What is the dosage rate of aspririn, expressed in mg aspirin per kg of body weight? c. At 2 aspirin tablets per day, how many years does it take for a person to consume 1.0 lb aspirin?

Explanation / Answer

a -Quantity of aspirine in two tablets = 2 * 5 gr = 10 gr = 0.66 gram = 660 mg

b - weight of person = 150 lbs = 150 * 453.592 = 68038.8 gram = 68.03 kg

so 660 mg for 68.03 kg person per day

dosage rate = 660/68.03 =9.70 mg/kg

c -1 lb = 453.592 gram

2 tablets = 660 mg

no of days = 453.592 / 0.66 =687.26 days = 1.89 years

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