Avogadro’s Number Conversions

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9.1 Measuring Matter Counting Particles Chemistry is all about particles: atoms, electrons, molecules, ions, formula units, or whatever you want to count (like students!). To calculate particles, chemists use a unit called a “mole” ( mol). 1 mole = 6.02 E 23 particles. It equals the number of atoms in 12.0 grams of C12. Weird particles to count Avogadro’s Number 6.02 E 23 is also called Avogadro’s Number, after Amedeo Avogadro, an Italian Physicist in the early 1800’s. Here’s what he looked like: They were experimenting with fisheye lens technology back then. Conversions How many eggs are in a dozen? 12 How many in three dozen? 36 Half a dozen? 6 A mole? 6.02 E 23 Two moles? 1.204 E 24 (or 12.04 E 23) FYI: Two moles of eggs would have a volume roughly 1/9 that of the Earth! EggPlanet! Conversions Example Moles to particles: you can determine how many particles a sample has by making a conversion. Conversion Factor: Calculator Review: Exponent Key = EE Ex: How many atoms are there in 3.5 moles of Zn? Look at Unit 9 Resources The Mole (Page 5) Conversions Example Ex: How many atoms are there in 3.5 moles of zinc? Known: 3.5 moles Zn Conversion Factor:

Transcript of Avogadro’s Number Conversions

Page 1: Avogadro’s Number Conversions

9.1 Measuring Matter Counting Particles Chemistry is all about particles: atoms, electrons, molecules, ions, formula units, or whatever you want to count (like students!).

To calculate particles, chemists use a unit called a “mole” (mol).

 1 mole = 6.02 E 23 particles.It equals the number of atoms in 12.0 grams of C­12.

Weird particlesto count

Avogadro’s Number6.02 E 23 is also called Avogadro’s Number, after Amedeo Avogadro, an Italian Physicist in the early 1800’s.Here’s what he looked like:

They were experimenting with fish­eye lens technologyback then.

ConversionsHow many eggs are in a dozen?  12How many in three dozen?  36Half a dozen?  6A mole?  6.02 E 23Two moles?  1.204 E 24 (or 12.04 E 23)

FYI: Two moles of eggs would have a volume roughly 1/9 that of the Earth!

Egg­Planet!

Conversions Example

Moles to particles: you can determine how many particles a sample has by making a conversion.

Conversion Factor:

Calculator Review: Exponent Key =   EE

Ex: How many atoms are there in 3.5 moles of Zn?

Look at Unit 9 Resources ­ The Mole (Page 5)Conversions Example

Ex: How many atoms are there in 3.5 moles of zinc?

Known: 3.5 moles Zn

Conversion Factor: 

 

http://upload.wikimedia.org/wikipedia/commons/8/80/Close-up_of_mole.jpg
http://upload.wikimedia.org/wikipedia/commons/3/3d/Avogadro_Amedeo.jpg
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Conversions Example TwoIt works the other way also.How many moles of P are there in 1.5 E 23 atoms of P?  

Known: 1.5 E 23 atoms phosphorus.

Conversion: 

ConversionsHow many molecules are there in 5.4 moles of H2?

ConversionsNow this one: How many moles of sodium are there in 4.8 E 22 atoms of sodium?

http://www.youtube.com/watch?v=RAFcZo8dTcU

Sodium in Water

Homework

9.1 Booklet ProblemsDue: Next class.

http://www.youtube.com/watch?v=RAFcZo8dTcU

Warm Up What is a mole? What is molar mass? What is Avogadro’s number?

Warm Up What is a mole? What is molar mass? What is Avogadro’s number?

Data Representation, Number Systems and Base Conversions

Data Representation, Number Systems and Base Conversions

Exp 03: Avogadro’s Number - ChemSkills · Exp 03: Avogadro’s Number Part 1: Calibration of the Pipet 1. Obtain a Pasteur pipet from your instructor 2. Obtain a 10 mL beaker from

Exp 03: Avogadro’s Number - ChemSkills · Exp 03: Avogadro’s Number Part 1: Calibration of the Pipet 1. Obtain a Pasteur pipet from your instructor 2. Obtain a 10 mL beaker from

Estimation of Avogadro’s Number

Estimation of Avogadro’s Number

Quantitative Composition of Compounds Chapter 7. Avogadro’s Number How do we count atoms? –Dozens? Reams?

Quantitative Composition of Compounds Chapter 7. Avogadro’s Number How do we count atoms? –Dozens? Reams?

Solution Manual for Chemistry The Molecular …...course of introductory chemistry. Because Avogadro’s number is so large, it is impossible to show students a Because Avogadro’s

Solution Manual for Chemistry The Molecular …...course of introductory chemistry. Because Avogadro’s number is so large, it is impossible to show students a Because Avogadro’s

1 The Mole 6.02 X 10 23 Everybody knows Avogadro’s Number.

1 The Mole 6.02 X 10 23 Everybody knows Avogadro’s Number.

Number System Conversions (1)

Number System Conversions (1)

Computer Determining Avogadro’s Number - · PDF fileAdvanced Chemistry with Vernier 31 - 1 Determining Avogadro’s Number ... In this experiment, ... 9. Turn on the DC power

Computer Determining Avogadro’s Number - · PDF fileAdvanced Chemistry with Vernier 31 - 1 Determining Avogadro’s Number ... In this experiment, ... 9. Turn on the DC power

The Mole, Avogadro’s Number & Molar Masselysciencecenter.com/yahoo_site_admin/assets/docs/The_Mole__Avoga… · The Mole, Avogadro’s Number & Molar Mass Packet #20 . COUNTING

The Mole, Avogadro’s Number & Molar Masselysciencecenter.com/yahoo_site_admin/assets/docs/The_Mole__Avoga… · The Mole, Avogadro’s Number & Molar Mass Packet #20 . COUNTING

Example Exercise 9.1 Atomic Mass and Avogadro’s · PDF fileExample Exercise 9.1 Atomic Mass and Avogadro’s Number. ... Calculate the density of ammonia gas, NH. 3, ... If we filled

Example Exercise 9.1 Atomic Mass and Avogadro’s · PDF fileExample Exercise 9.1 Atomic Mass and Avogadro’s Number. ... Calculate the density of ammonia gas, NH. 3, ... If we filled

QUARK MASSES - KIT · 2016. 3. 1. · Avogadro’s project 12 g ≡ NA atoms of carbon-12 define Avogadro’s constant NA≡ 6.022141··· × 1023 in practice count the number of

QUARK MASSES - KIT · 2016. 3. 1. · Avogadro’s project 12 g ≡ NA atoms of carbon-12 define Avogadro’s constant NA≡ 6.022141··· × 1023 in practice count the number of

The Mole Concept. Avogadro’s Number Avogadro’s Number (symbol N) is the number of atoms in 12.01 grams of carbon. Its numerical value is 6.02 × 10 23.

The Mole Concept. Avogadro’s Number Avogadro’s Number (symbol N) is the number of atoms in 12.01 grams of carbon. Its numerical value is 6.02 × 10 23.

Avogadro’s Number, Moles and Molar Mass...Avogadro’s Number, Moles and Molar Mass For a scientist to carry out experiments involving only 1, 2, 3, a dozen or even a million atoms

Avogadro’s Number, Moles and Molar Mass...Avogadro’s Number, Moles and Molar Mass For a scientist to carry out experiments involving only 1, 2, 3, a dozen or even a million atoms

Chapter 10 - The Mole & Avogadro’s Number Measuring Matter Sections 10.1 10.3.

Chapter 10 - The Mole & Avogadro’s Number Measuring Matter Sections 10.1 10.3.

IIIIIIIV The Mole I. Molar Conversions A. What is the Mole? n A counting number (like a dozen) n Avogadro’s number n 1 mol = 6.02 10 23 items A large.

IIIIIIIV The Mole I. Molar Conversions A. What is the Mole? n A counting number (like a dozen) n Avogadro’s number n 1 mol = 6.02 10 23 items A large.

The Mole Concept Avogadro’s Number = 6.022 x 10 23.

The Mole Concept Avogadro’s Number = 6.022 x 10 23.

IIIIIIIV Unit 6 - The Mole I. Molar Conversions A. What is the Mole? n A counting number (like a dozen) n Avogadro’s number (N A ) n 1 mol = 6.02 10.

IIIIIIIV Unit 6 - The Mole I. Molar Conversions A. What is the Mole? n A counting number (like a dozen) n Avogadro’s number (N A ) n 1 mol = 6.02 10.

Worked Example 6.1 Molar Mass and Avogadro’s Number: Number of Molecules

Worked Example 6.1 Molar Mass and Avogadro’s Number: Number of Molecules

Avogadro’s Number Notes. Conversions In order to convert one unit to another: Given infoUnits to convert intoUnits to convert into etc Units to cancelUnits.

Avogadro’s Number Notes. Conversions In order to convert one unit to another: Given infoUnits to convert intoUnits to convert into etc Units to cancelUnits.