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28 December, 07:39

Assume the recommended single dose of an antihistamine for a child weighing between 18-23 lbs is 0.75 teaspoons (tsp). if 1.00 tsp contains 12.5 mg/5 ml of the active ingredient in the antihistamine, how many milligrams of active ingredient does the recommended dose for a child weighing between 18-23 lbs contain? assume that 1.00 tsp = 5 ml

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  1. 28 December, 11:28
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    We are given that 1 teaspoon is equivalent to 5 mL, therefore 0.75 teaspoon is:

    0.75 teaspoon * (5 mL / 1 teaspoon) = 3.75 mL

    So the mass is density times volume:

    mass = (12.5 mg/5 ml) * 3.75 mL

    mass = 9.375 mg
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