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 145 lb (65.8 kg ) is 9.29×10−3mol .
What volume of a 0.0520 M KCN solution contains 9.29×10−3mol of KCN?
Express the volume to three significant figures and include the appropriate units.
Part B
Gastric acid pH can range from 1 to 4, and most of the acid is HCl.
For a sample of stomach acid that is 2.50×10−2M in HCl, how many moles of HCl are in 19.2 mL of the stomach acid?
Express the amount to three significant figures and include the appropriate unit