When using the LWQ method, a pharmacist needs to obtain 60 mg of a drug using a balance that has a MWQ of 120 mg. If the desired quantity of drug is to be contained in a mixture mass of 150 for the last step, what mass of diluent (in mg) is to be weighed by the pharmacist?

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When using the LWQ method, a pharmacist needs to obtain 60 mg of a drug using a balance that has a MWQ of 120 mg. If the desired quantity of drug is to be contained in a mixture mass of 150 for the last step, what mass of diluent (in mg) is to be weighed by the pharmacist?

 

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