Molar Mass Notes.notebook
December 11, 2015
The Mole!!!
1 mole of anything = _______________________
­­Particles could be atoms, molecules, or beans!
­­How long would it take to count a mole of beans?
If the world's population counted beans at a rate of 70 beans per minute for their entire lives (assume life expectancy of 78 yrs), this many beans would be counted
(a mole is still 30,900 times bigger!)
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Molar Mass Notes.notebook
December 11, 2015
The Mole, continued
(click here for a video overview of the mole concept)
­­a.k.a. "Avogadro's Number" ­­a word to represent a number, just like:
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Molar Mass = The mass, in grams, of 1 mole of a substance...found on the P.T.
6.02x1023 C atoms = 12.0 g 6.02x1023 O atoms = 16.0 g 6.02x1023 CO2 molecules = 44.0 g 2
Molar Mass Notes.notebook
December 11, 2015
Molar mass of sucrose (C12H22O11)
Calculate the molar mass of iron(II) sulfate:
Calculate the mass of sucrose (C12H22O11)
12(12.0g) + 22(1.0g) + 11(16.0g) = 342.0g
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