Friday, January 22, 2010

Stoichiometry - Jan. 22

In today's class we learned about Stoichiometry and did many examples.

Stoichiometry
- Coefficients in balanced equations represent moles
- They are also conversion factors

*Always write a balanced equation

Examples:
If a 0.3 mole sample of methane reacts with oxygen, how many moles of each product are produced?





Converting to mass requires one additional step

Example
How many grams of water are produced if 0.84 mol produced of phosphoric acid is neutralized by Barium hydroxide?







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