posted by katydid .
Use the reaction below to determine the volume of 0.123 M AgNO3(aq)that is needed to form 0.657 g of Ag2SO4 (s).
2AgNO3(aq) + H2SO4(aq) ¨ Ag2SO4 (s) + 2HNO3(l)
2AgNO3 + H2SO4-----Ag2SO4 + 2HNO3
Here is a worked example of a stoichiometry problem. http://www.jiskha.com/science/chemistry/stoichiometry.html