mole conversions 2017.notebook · 2017. 12. 8. · mole of any substance's chemical formula....
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Mole Conversions 2017.notebook
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December 08, 2017
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Mole Conversions
Aim: To define the mole and convert between the units of grams, particles and liters using factorlabel.
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What is a mole anyway?
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What is a mole anyway?
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Avogadro's Hypothesis
1 mole = 6.02 x 1023 particles (atoms or molecules)
What is a mole in Chemistry?
602,000,000,000,000,000,000,000
Mole: a unit that measures a specific quantity of atoms or molecules (both considered particles).
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If we distributed 6.02 x 1023 dollars among the entire population of the planet each person would still have approximately 89 trillion dollars to spend
How much is a mole really?
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• In Chemistry we can use the mole to count atoms BECAUSE...
H
O
H
Gram‐formula mass (GFM): the mass in grams of 1 mole of any substance's chemical formula. Also called "molar mass", "molecular mass", or "formula mass".
1 mole = G.F.M in grams = 22.4 L of a = 6.02 x 1023 particles of a substance gas at STP of a substance
1 mole= 6.02 x 1023 molecules H2O
1 mole= 18.0 g H2O
GFM H2OH: 1.0O: 16.0 x 218.0 g
35.09 g x 1 mol x 6.02 x 1023 molecules = 1.174 x 1024
18.0 g 1 mol molecules H2O
35.09 g of water contains 1.174 x 1024 molecules
Example: How many molecules are in a beaker with 35.09 grams of water? Go from grams‐‐> moles ‐‐> molecules
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DO NOWYOU are working during your career as a lab technician for a major Chemical company. Your
project manager has requested that you determine the number of water molecules in 1
glass (8 ounces) of water.
You are given the following information:• 1 ounce of water contains 28.3 grams.
You also have all of your handydandy knowledge of chemistry and the mole at your disposal.
Can YOU complete this task?
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Always convert to moles then to the desired unit.
ALL ROADS LEAD TO MOLES
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1) A sample of NaCl weighs 45 grams. How many moles are in the sample?
MolesGrams Conversions
2) How many grams are in a 0.25 moles of Mg(OH)2?
3) How many grams of NaCl are in a 3.00 mole sample?
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MoleParticles Conversions
3) How many atoms are in 0.340 moles of sodium?
4) How many moles are in 1.204 x 1024 molecules of Bromine?
5) How many moles are in 5.60 x 10 21 atoms of He?
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5) How many liters are in 0.75 moles of oxygen gas?
6) How many moles are in 56.2 liters of water vapor?
MolesLiters Conversions
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Mole Conversion Practice Multi Step
2) Determine the number of liters in 454 grams of CO2 gas at STP.
3) Determine the mass in grams of 3.60 x 1022 molecules of H2SO4
1) How many molecules are there in 160. grams of N2I6 ?
4) How many atoms are in 44.0 grams of oxygen?
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MOLE MAP!!!!
PARTICLES
VOLUMEMASS