Cambodia Pharmacy Exit Exam
Cambodia National Exit Examination — Pharmacy (NECHS / ប្រឡងចេញថ្នាក់ជាតិ — ឱសថសាស្ត្រ)
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A pharmacist must prepare 250 mL of a 2% w/v chlorhexidine solution from a 20% w/v stock concentrate. How many millilitres of the 20% w/v stock are required?
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