**QUESTION**

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\[ \begin{array}{l} 3 \mathrm{~mol} \mathrm{KI} \times \frac{0.3 \mathrm{~mol} \mathrm{KI}}{1 \mathrm{~L}}=0.9 \frac{(\mathrm{mol} \mathrm{KI})^{2}}{\mathrm{~L}} \\ 3 \mathrm{~mol} \mathrm{KI} \times \frac{1 \mathrm{~L}}{0.3 \mathrm{~mol} \mathrm{KI}} \end{array} \] The values with units of $\frac{\mathrm{mol}^{2}}{\mathrm{~L}}$ or $\frac{\mathrm{L}^{2}}{\mathrm{~mol}}$ are not useful, as you need values in either moles or liters. Part A 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 $165 \mathrm{lb}(74.8 \mathrm{~kg})$ is $9.08 \times 10^{-3} \mathrm{~mol}$. Express the volume to three significant figures and include the appropriate units. View Available Hint(s) Submit Part B Gastric acid $\mathrm{pH}$ can range from 1 to 4 , and most of the acid is $\mathrm{HCl}$. For a sample of stomach acid that is $1.67 \times 10^{-2} \mathrm{M} \mathrm{in} \mathrm{HCl}$, how many moles of $\mathrm{HCl}$ are in $14.6 \mathrm{~mL}$ of the stomach acid? Express the amount to three significant figures and include the appropriate units. View Available Hint(s)

Volume $=$ Units Submit Part B Gastric acid $\mathrm{pH}$ can range from 1 to 4 , and most of the acid is $\mathrm{HCl}$. For a sample of stomach acid that is $1.67 \times 10^{-2} \mathrm{M}$ in $\mathrm{HCl}$, how many moles of $\mathrm{HCl}$ are in $14.6 \mathrm{~mL}$ of the stomach acid? Express the amount to three significant figures and include the appropriate units. View Available Hint(s) Submit