Objectives: Prepare for the test
Be able to determine how much reactants
are needed to react perfectly
Announcements: Test next class - Chapts.
10 & 11 (Reaction types, symbols,
balanced equations, moles)
Warm-ups: How many moles of molecules
are in 4.8 x 10^25 molecules of CaO?
What mass would that be?
What is the percent composition of
Ca & O in CaO?
Decoding
Mass-->moles-->molecules--> moles-->mass
More stoichiometry
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