Question

Potassium cyanide is a toxic substance. The median lethal dose of KCN for a person weighing 145 lb (65.8 kg ) is 9.29×10−3 mol . What volume of a 0.0520 M KCN solution contains 9.29×10−3 mol of KCN? Thank you

Answer 1

`"0.179 L"`

Explanation:

`"Molarity" = "Moles of solute"/"Volume of solution (in litres)"`

`"0.0520 M" = (9.29 × 10^-3\ "mol") / "V"`

`"V" = (9.929 × 10^-3\ "mol")/"0.0520 M" = "0.179 L"`