I have written up an example of a step by step procedure for doing this type problem. The link is below. If you have any trouble, post your question with clear explanation of what you don't understand and I can help you through.
http://www.jiskha.com/science/chemistry/stoichiometry.html
What mass in grams of sodium hydroxide is produced if 20.0 g of sodium metal reacts with excess water according to the chemical equation?
2Na(s)+2H20(l)=2NaOH(aq)+Hs(g)
How many moles of Ag can be produced if 350. g of Cu are reacted with excess AgNO3 according to the equation?
Cu(s)+2AgNO3(aq)=2Ag(s) +Cu(NO3)2(aq)
I tried these equations but just seem to not get it right. i know i need to do train tracks (set them up), i just don't know how. help?
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