Potassium cyanide is a toxic substance, and the median lethal dose depends on the mass of the person or animal that ingests it. The median lethal dose of KCN for a person weighing 195 lb (88.5 kg ) is 7.47×10−3 mol .
What volume of a 0.0210 M KCN solution contains 7.47×10−3 mol of KCN?
Express the volume to three significant figures and include the appropriate units.
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