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MOLE DAY Celebration. - a unit of measurement containing about. particles. Dozen = 12. Pair = 2. Names associated with an amount. Can you think of any more?????. The Mole…. The mole (mol) is the amount of a substance that contains atoms BASED on 12.00 grams of 12 C.
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MOLE DAY Celebration - a unit of measurement containing about particles.
Dozen = 12 Pair = 2 Names associated with an amount Can you think of any more?????
The Mole….. The mole (mol) is the amount of a substance that contains atoms BASED on 12.00 grams of 12C 1 mol = NA = 6.0221367 x 1023 Avogadro’s number (NA)
Representative Particles • 1) Atoms – any element from Periodic Table Ex. C, Sc, Sb, Al • 2) Molecules – two or more non-metals chemically combined Ex: H2O CO2 NH3 • 3) Formula Units(Ions)– a metal and a non-metal combined Ex: NaCl, BeO, FeI3
1 mol = 6.02 x 1023I A MFU .1 moleNaCl = 6.02 x 1023 formula units ofNaCl REVIEW: Representative Particles o rmu l a n i t s ons t oms o l ecu l e s • 1 mole NH4+ = 6.02 x 1023 ionsNH4+ • 1 moleAu = 6.02 x 1023 atoms Au • 1 moleCO2 = 6.02 x 1023 moleculesCO2 • 1 mole equals formula mass on periodic table
eggs shoes Molar mass is the mass of 1 mole of in grams marbles atoms 1 mole 12C atoms = 6.022 x 1023 atoms = 12.00 g 1 12C atom = 12.00 amu 1 mole 12C atoms = 12.00 g12C 1 mole lithium atoms = 6.941 g of Li For any element atomic mass (amu) = molar mass (grams) 7.2
What is the mass of one mole of: S C Hg Fe Cu 3.2
1 mol K 6.022 x 1023 atoms K x x = 1 mol K 39.10 g K How many atoms are in 0.551 g of potassium (K) ? 1 mol K = 39.10 g K 1 mol K = 6.022 x 1023 atoms K 0.551 g K 1 8.49 x 1021 atoms K Mole in the MIDDLE 7.2
Molar Mass Let’s try using the mole and molar mass………………..
1S 32.07 amu 2O + 2 x 16.00 amu SO2 SO2 64.07 amu Molecular mass(or molecular weight) is the sum of the atomic masses (in amu) in a molecule. For any molecule molecular mass (amu) = molar mass (grams) 1 molecule SO2 = 64.07 amu 1 mole SO2 = 64.07 g SO2 Let’s try some more…………….. 3.3
Three Periods of thePeriodic Table of the Elements 1H1.008 2He4.003 3Li6.941 4Be9.012 5B10.811 6C12.011 7N14.007 8O15.999 9F18.998 10Ne20.180 11Na22.990 12Mg24.305 13Al26.982 14Si28.086 15P30.974 16S32.066 17Cl35.453 18Ar39.948 How many moles of Aluminum do you have in 1 can?
COOKIE = 70% CARBOHYDRATES Most Carbohydrates in cookies are sucrose C6H12O11 It's more than a spoonful but still it's not a lot considering there are 602000000000000000000000 sweet molecules of sugar in the bag! How much C12H22O11(sucrose) needs to be weighed out to get a mole?
(12 X 12.011) + (22 X 1.008) + (11 X 15.999) = 144.132 + 22.176 + 175.989 = 342.297 grams. Let's round it off to 342.30 grams. The 342.30 grams of sugar in that bag contain about - 602,000,000,000,000,000,000,000 molecules!
6.02 X 1023 can also be written as 6,020,000,000,000,000,000,000,000