The Mole.

Slides:

Advertisements

Similar presentations

Stoichiometry “In solving a problem of this sort, the grand thing is to be able to reason backward. This is a very useful accomplishment, and a very easy.

Advertisements

Chemical Quantities or

The Mole toichiometry_notes.htm.

Chapter 7 Chemical Quantities

Molecular Composition of Gases

Chemical Quantities The Mole.

AP Chemistry Chapter 3 Chemical Quantities (The Mole)

Molar Conversions (p.80-85, )

IIIIIIIV Ch. 10 – The Mole I. Molar Conversions A. What is the Mole? n A counting number (like a dozen) n Avogadros number (N A ) n 1 mole =

Chemical Quantities or

WHAT IS A MOLE? x 1023.

Unit 4 – The Mole Honors Chemistry Part 1.

Calculations with Elements and Compounds

A DOZEN roses = 12 roses A PAIR of shoes = 2 shoes.

Molar mass, percent composition, empirical and molecular formulas

Ideal Gas Law PV=nRT.

Thursday, April 7th : “A” Day Friday, April 8th: “A” Day Agenda

Using Moles to Count Atoms

Moles and Formula Mass.

% Composition, Empirical and Molecular Formulas

All Roads Lead to the Mole

Avogadro and the Mole.

Volume and Moles (Avogadro’s Law)

The Mole Concept Chemistry. What is a mole? The mole is a unit used to measure very small quantities – Such as atoms, particles, molecules, ions, etc.

Mole  measurement of the number of particles in a sample  1 mol He (g) = 6.02 x atoms  1 mol CO 2(g) = 6.02 x molecules.

Grams to Moles to Molecules. How many molecules in 5.00g of hydrogen gas? 5.00g H 2 x 1mole x 6.02 x molecules = 2.02 g1 mole = 5.00 / 2.02 x 6.02.

Unit 5: The Mole and Stoichiometry

The Mole 1 dozen = 12 1 gross = ream = mole = 6.02 x 1023.

The Mole Molar Mass 0 Also called atomic mass, formula mass, molecular mass 0 Unit = g/mol 0 Calculating Molar Mass 0 Use the average atomic mass from.

Relating Mass to Numbers of Atoms The mole, Avogadro’s number, and molar mass provide the basis for relating masses in grams to moles.

The Mole Standards 1 dozen = 1 gross = 1 ream = 1 mole = x There are exactly 12 grams of carbon-12 in one mole of carbon-12.

1 Sherlock Holmes, in Sir Arthur Conan Doyle’s A Study in Scarlet “In solving a problem of this sort, the grand thing is to be able to reason backward.

Good Day! 11/23/2015 Starter: = 2! Please explain why this is true. Today we will be… First doing a very thourough cleaning of the lab equipment.

kittens21 Couple of meatballs121 dozen pencils1441 gross of.

The Mole Standards Standards The Mole 1 dozen = 1 gross = 1 ream = 1 mole = x There are exactly 12 grams of carbon-12 in one mole.

The Mole 1 dozen = 1 gross = 1 ream = 1 mole = x That is a REALLY BIG number…

Take your periodic table out. What is atomic mass of Carbon Point where you can find it in the periodic table! 6 is atomic number not atomic mass Atomic.

1. 2 Chemical Quantities or 3 How you measure how much? How you measure how much? n You can measure mass, n or volume, n or you can count pieces. n We.

Ideal gases and molar volume

Day 33 Notes (Chapter 7) Chemical Quantities (The Mole)

The Mole CA Standards A dozen If I have a dozen eggs, how many is that? 12 If I have a dozen pencils, how many is that? 12 If there are a dozen people.

NOTES: Gases, Molar Volume, & Stoichiometry – a REVIEW!

HAHS MS. KNICK Avogadro, The Mole, and Grams. The Mole The amount of substance that contains as many particles as there are atoms in exactly 12 g of carbon.

The Mole The Ten Commolements Thou shalt not use 6.02 x 1023 in vain. Thou shalt not use the term mole if thou has no true knowledge of the term mole.

UNIT 6: CHEMICAL QUANTITIES Chapter 10: Mole and Volume Relationships.

Avogadro’s and the Mole. Moles a mole is the number of carbon atoms in exactly 12g of carbon. a mole is a unit of measurement, just like grams…

Miss Fogg Spring 2016  A particle can refer to an individual atom OR a type of molecule ◦ Jellybean ◦ Baseball ◦ Carbon atoms ◦ Hydrogen atoms ◦ Water.

WHAT IS A MOLE? SI unit for Amount of Substance A mole is a unit like “dozen” or “pair” or “gross”. It doesn’t represent a measured number, but a counted.

Molar Mass, section 7.2. A. The Molar Mass of a Substance 1) Define Molar Mass = the mass (in grams) of one mole of any element or compound Generic for.

Chapter 7 Lesson 2 Chemical Quantities. Mass-Mole Calculations What is the mass of 1.33 moles of titanium, Ti? What is the mass of 1.33 moles of titanium,

Take your periodic table out. What is atomic mass of Carbon Point where you can find it in the periodic table! 6 is atomic number not atomic mass Atomic.

Moles and Formula Mass.

Moles and Formula Mass.

Avogadro, The Mole, and Grams

The Mole 1 dozen = 12 1 gross = ream = mole = x 1023

Moles and Formula Mass.

Calculating Percent by Mass

The Mole 1 dozen = 12 1 gross = ream = mole = 6.02 x 1023

Molar Mass and Molar Volume

#p+ ______ ______ _______ #no ______ ______ _______

3.3 The Molar Volume Pages

Avogadro’s Law.

Avogadro’s Number: 1 mole = 6.02 x 1023 particles

Avogadro’s Law.

Moles and Gas Volume (3.4) Avogadro’s Hypothesis: equal volumes of different gases at the same temperature and pressure contain the same number of particles.

Get a warm up sheet from the front, complete it NO NOTES

Unit 5A Mole – Volume Relationships

Presentation transcript:

The Mole

CA Standards Students know the quantity one mole is set by defining one mole of carbon 12 atoms to have a mass of exactly 12 grams. Students know one mole equals 6.02 x 1023 particles (atoms or molecules). Students know how to determine the molar mass of a molecule from its chemical formula and a table of atomic masses and how to convert the mass of a molecular substance to moles, number of particles, or volume of gas at standard temperature and pressure.

The Mole 1 dozen = 12 1 gross = 144 1 ream = 500 1 mole = 6.02 x 1023 There are exactly 12 grams of carbon-12 in one mole of carbon-12.

I didn’t discover it. Its just named after me! Avogadro’s Number 6.02 x 1023 is called “Avogadro’s Number” in honor of the Italian chemist Amadeo Avogadro (1776-1855). I didn’t discover it. Its just named after me! Amadeo Avogadro

Calculating Formula Mass Calculate the formula mass of carbon dioxide, CO2. 12.01 g + 2(16.00 g) = 44.01 g  One mole of CO2 (6.02 x 1023 molecules) has a mass of 44.01 grams

Mole Relationships Liters Mole Grams Atoms or molecules 6.02 x 1023 22.4 L 6.02 x 1023 22. 4 L Mole Mole Relationships Atomic Mass Grams

Calculations with Moles: Converting moles to grams How many grams of lithium are in 3.50 moles of lithium? 3.50 mol Li 6.94 g Li = g Li 45.1 1 mol Li

Calculations with Moles: Converting grams to moles How many moles of lithium are in 18.2 grams of lithium? 18.2 g Li 1 mol Li = mol Li 2.62 6.94 g Li

Calculations with Moles: Using Avogadro’s Number How many atoms of lithium are in 3.50 moles of lithium? 3.50 mol 6.02 x 1023 atoms = atoms 2.07 x 1024 1 mol

Calculations with Moles: Using Avogadro’s Number How many atoms of lithium are in 18.2 g of lithium? 18.2 g Li 1 mol Li 6.022 x 1023 atoms Li 6.94 g Li 1 mol Li (18.2)(6.022 x 1023)/6.94 = atoms Li 1.58 x 1024

Standard Molar Volume 1 mole of a gas occupies 22.4 liters of volume Equal volumes of all gases at the same temperature and pressure contain the same number of molecules. - Amedeo Avogadro At STP (Standard Temperature and Pressure): 1 mole of a gas occupies 22.4 liters of volume

Calculations with Moles: Using Standard Molar Volume How many moles of hydrogen are in 100 L of hydrogen at STP? 100 L 1 mol = mol 4.64 22.4 L

Calculations with Moles: Using Standard Molar Volume How many liters are occupied by 3 moles of oxygen gas at STP? 3 mol 22.4 L = L 67.2 1 mol