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Friday, March 16, 2012

Tues., Mar. 20, 2012

Warm-ups: The largest gold nugget ever
found in Alaksa, shown below, weighs 9145.7
grams. How many moles of gold are in
that nugget? (that's over 20 lbs--$ 530,432
in today's dollars-current location unknown)


Objectives: Calculate the percent composition of
Substances given the formula
Announcements: Quiz tomorrow on
basic mole calculations, molar mass &
percent composition
about the homework
More dimensional Analysis
Percent composition
Challenger:
In a copper mine, ore can be mined
as chalcopyrite (CuFeS2) or as malachite
(CuCO3). Which is a richer source of
copper ore?
Quiz Practice



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