-Mass to Mass problems involve one additional conversion
Grams of A ->Moles of A-->Chemical equation/multiply by the stoichiometric ratio-->Moles of B-->grams of B
Ex. Lead (IV) nitrate reacts with 5.0g of potassium iodide. How many grams of lead (IV) nitrate are require for a complete reaction?
Pb(NO3)4+4KI -> 4KNO3+ PbI4
5.0g x 1mol x 1 x 455.2 =3.4g
166g 4 1mol
More Examples
http://www.800mainstreet.com/6/0006-004-Mole-Mass-Con.htm
http://www.youtube.com/watch?v=iF3C5bJ2UPM
K.P
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