Help! will give medals if you can explain (I found the answer online, but thats not helpful...) A patient weighs 146 pounds and is to receive a drug dosage of 45.0 mg per kg of body weight. The drug is supplied as a solution that contains 25.0 mg of drug per mL of solution. How many mL of the drug should the patient receive? (1pound=454 g).
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I used a table to solve the problem, this shows how everything is cancelled out to get the answer. You first get your give, 146 lb and multiply it by 454 g over 1 pound because that is the ratio that is given. Next you must convert the grams to kilograms ( 1kg = 1000g) and multiply. lastly multiply it by 45.0 mg by 1 kg because that is the ratio given.
Calculator answer is 2982.78 mL or it is 2980 with 3 significant figures
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