Mole Conversions 2017.notebook December 08, 2017

What is a mole anyway? 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? What is a mole in Chemistry? Avogadro's Hypothesis Mole: a unit that measures a specific quantity of atoms or molecules (both considered particles).

1 mole = 6.02 x 1023 particles (atoms or molecules)

602,000,000,000,000,000,000,000

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• In Chemistry we can use the mole to count atoms How much is a mole really? BECAUSE... 1 mole = G.F.M in grams = 22.4 L of a = 6.02 x 1023 particles O H

H of a substance gas at STP of a substance Gram‐formula mass (GFM): the mass in grams of 1 If we distributed 6.02 x 1023 mole of any substance's chemical formula. Also called dollars among the entire "molar mass", "molecular mass", or "formula mass". population of the planet each Example: How many molecules are in a beaker with 35.09 grams of water? Go from grams‐‐> moles ‐‐> molecules person would still have GFM H2O approximately 89 trillion H: 1.0 35.09 g x 1 mol x 6.02 x 1023 molecules = 1.174 x 1024 dollars to spend O: 16.0 x 2 18.0 g 18.0 g 1 mol molecules H2O 1 mole= 18.0 g H O 2 35.09 g of water contains 1.174 x 1024 molecules 1 mole= 6.02 x 1023

molecules H2O

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DO NOW YOU 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. ALL ROADS LEAD Can YOU complete this task? TO MOLES Always convert to moles then to the desired unit.

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Moles­Grams Conversions Mole­Particles Conversions 1) A sample of NaCl weighs 45 grams. How many moles are in the sample? 3) How many atoms are in 0.340 moles of sodium?

4) How many moles are in 1.204 x 1024 molecules of

2) How many grams are in a 0.25 moles of Mg(OH)2? Bromine?

5) How many moles are in 5.60 x 10 21 atoms of He? 3) How many grams of NaCl are in a 3.00 mole sample?

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Moles­Liters Conversions Mole Conversion Practice­ Multi Step

1) How many molecules are there in 160. grams of N2I6 ? 5) How many liters are in 0.75 moles of oxygen gas?

2) Determine the number of liters in 454 grams of CO2 gas at STP.

6) How many moles are in 56.2 liters of water vapor? 3) Determine the mass in grams of 3.60 x 1022 molecules of

H2SO4

4) How many atoms are in 44.0 grams of oxygen?

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MOLE MAP!!!!

MASS VOLUME

PARTICLES

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