Potassium cyanide is a toxic substance, and the median lethaldose 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 contains7.47×10^?3 mol of KCN?

Express the volume to three significant figures and include theappropriate units.

Part B

Gastric acid pH can range from 1 to 4, and most of the acid isHCl.

For a sample of stomach acid that is1.58×10^?2M in HCl, how many moles of HCl are in17.0 mL of the stomach acid?

Express the amount to three significant figures and include theappropriate units.