A lot of questions. Do you need help with all of this or do you know how to do parts of it and want to check your answers? Post what work you've done.
Here is a link to an example stoichiometry problem I've posted. This is not a limiting reagent problem; however, you can make it a limiting reagent problem by working it twice to determine moles of the product formed and the smaller of the two values you obtain will be the correct value to use as the limiting reagent.
http://www.jiskha.com/science/chemistry/stoichiometry.html
Suppose that 50.0 cm3 of 2.00 M hydrochloric acid are added to 4.00 grams of zinc metal.
What it the limiting reagent? How many grams of zinc are actually consumed? What is the concentration of the hydrochloric acid solution after the reaction has occurred? What mass of hydrogen will be produced?
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