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Stoichiometry Road Map
Transcript of Stoichiometry Road Map
4 Na + O 2 Na O
How many mol of Na are required to produce 20.0 mol of Na O? 2 Given: 20.0 mol Na O
Unknown: mol of Na This is a mol - mol problem.
Here is where you would start and end on the roadmap. Problem #2:
2 Al + Fe O Al O + 2 Fe
If 30.0 g of Fe O reacts,
how many g of Fe is produced? Given: 30.0 g Fe O
Unknown: g of Fe This is a mass - mass problem.
Here is where you would start and end on the roadmap. 2 3 3 2 2 3 In actuality, you can start and end anywhere on the roadmap you choose. Problem #3:
2 K + Cl 2 KCl
If 3.0 mol of K reacts, how many
grams of KCl is produced? Given: 30.0 mol K
Unknown: g of KCl This is a mol - mass problem.
Here is where you would start and end on the roadmap. 2 2 3 Problem #4:
2 Li + 2 H O 2 LiOH + H
If 100.0 g of Li are reacted, how many mol of H are formed? 2 2 2 Given: 100.0 g of Li
Unknown: mol of H This is a mass-mol problem.
Here is where you would start and end on the roadmap. 2 The following presentation is example
problems showing you how each type of problem
uses the roadmap. KEY POINT:
All problems use a mole ratio from
the balanced equation! The End! 2 2 2