Unit 5: Stoichiometry Moles and Molar Mass.

Slides:

Advertisements

Similar presentations

The Mole A counting unit Similar to a dozen, except instead of 12, it’s 602 billion trillion 602,000,000,000,000,000,000, X (in scientific.

Advertisements

Molar Mass and Mole Calculation Problems

Bell Ringer What is a Mole? What is the mass of a NaCl molecule?

Stoichiometry 2: grams to grams Chemistry Ms. Boon &

Timberlake LecturePLUS1 Chemical Reactions and Quantities The Mole Calculations Using Molar Mass.

Chapter 8 The Mole. 1 trio= 3 singers 1 six-pack Cola=6 cans Cola drink 1 dozen donuts=12 donuts 1 gross of pencils=144 pencils Collection Terms.

What is a Mole How many socks come in a pair? 2 How many eggs are in a dozen? 12 How many eggs come in a gross? 144 How many pencils come in a ream? 500.

Chapter The Mole 5.6 Molar Mass 5.7 Mole Relationships in Chemical Equations 5.8 Mass Calculations for Reactions.

Burning is a chemical change

Matter Unit.  A unit created to describe atoms because the gram and kilogram are too large to use to define an atom.  1amu = 1.66 x g  g.

Introduction to the Mole Background When you buy eggs you usually ask for a _______ eggs. You know that one dozen of any item is ______.

Mole-Mass Relationship. The Mole Review What is a mole? How do scientists use the concept of the mole? Who was the first person to come up with the idea.

Molar Mass Conversions

Stoichiometry 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.

1 The Mole 6.02 X What is “The Mole??” A counting unit (similar to a dozen) 6.02 X (in scientific notation) = 602 billion trillion = 602,000,000,000,000,000,000,000.

Chemical Calculations Mole to Mass, Mass to Moles.

Section 3 Moles of Compounds Objectives: Recognize the mole relationship shown by chemical formula Calculate the molar mass of a compound Calculate the.

1 Chapter trio= 3 singers 1 six-pack Cola=6 cans Cola drink 1 dozen donuts=12 donuts 1 gross of pencils=144 pencils Collection Terms.

Chap. 9: Stoichiometry Identify the mole ratio of any two species in a chemical reaction. Calculate theoretical yields from chemical equations.

7.1 Notes Continued…The Mole! Key Concepts Why do chemists use the mole? How can you calculate the mass of a reactant or product in a chemical reaction?

1 Chapter The Mole 5.6 Molar Mass 5.7 Mole Relationships in Chemical Equations 5.8 Mass Calculations for Reactions.

Molar Mass Mole to Mole Mass to mass Avogadro’s Number Grab Bag

A. Measuring Matter 1. Statement Chemistry is a quantitative science. 2. What is one way to measure matter? One way to measure matter is to count how.

+ Mole and Stoichiometry HW: Read CH 6 and CH 9. + Measuring Matter A mole is an amount of a substance Similar to: 12 in a dozen, 100 pennies in a dollar,

IC5.1.4 Calculations © Oxford University Press Calculations.

Unit A 2.4 The Mole To play the movies and simulations included, view the presentation in Slide Show Mode X 1023.

Chapter 3 The Mole Molar Mass Mole Relationships in Chemical Equations

An element is a substance that is made from one kind of atom only

Chapter 10 Chemical Quantities 10.1 The Mole: A Measurement of Matter

The Mole Topic #19 To play the movies and simulations included, view the presentation in Slide Show Mode X 1023.

Law of Conservation of Matter

Factor Label Method and the Mole

6.02 X 1023 The Mole Chemistry Chapter 11

STOICHIOMETRY Chapter 9

The Mole and Molar Mass.

The Mole 6.02 X 1023 To play the movies and simulations included, view the presentation in Slide Show Mode.

The Mole and Molar Mass.

Chapter The Mole 5.6 Molar Mass

The Mole To play the movies and simulations included, view the presentation in Slide Show Mode X 1023.

The Mole To play the movies and simulations included, view the presentation in Slide Show Mode X 1023.

The Mole To play the movies and simulations included, view the presentation in Slide Show Mode X 1023.

The Mass of a Mole of an Element

Chemical Quantities Moles, % Compositions,.

THE MOLE You should be able to:

Section 3.1 The Mole and Molar Mass

Chemical Reactions Unit

Tuesday, February 13th, 2018.

3.10 – NOTES Measuring Matter - Moles

Moles & Molar Mass 10.1 The Mole &Molar Mass

Chemical Reactions Unit

% Formula Mass and % Composition

The Mole To play the movies and simulations included, view the presentation in Slide Show Mode X 1023.

Unit 5: Stoichiometry Moles and Molar Mass.

Chapter 6 The Mole Molar Mass Mole Relationships in Chemical Equations

Aim : The Mole : A measurement of matter

REVIEW Which is larger I? or I1- ? Name each particle.

STOICHIOMETRY Chapter 9

Please take out the Conversion Sheet from yesterday to check.

Unit 5: Stoichiometry Moles and Molar Mass.

The Mole To play the movies and simulations included, view the presentation in Slide Show Mode X 1023.

Stoichiometry Problems

Molar Mass Conversion Factors

The Mass of a Mole of an Element and a Compound

Chemical Composition.

The Mole To play the movies and simulations included, view the presentation in Slide Show Mode X 1023.

The Mole To play the movies and simulations included, view the presentation in Slide Show Mode X 1023.

The Mole To play the movies and simulations included, view the presentation in Slide Show Mode X 1023.

The Mole To play the movies and simulations included, view the presentation in Slide Show Mode X 1023.

Presentation transcript:

Unit 5: Stoichiometry Moles and Molar Mass

The Mole 1 dozen = 12 eggs 1 ream = 500 sheets of paper 1 hat trick = 3 goals 1 mole = 6.022 x 1023 of something Or 602,200,000,000,000,000,000,000 Also known as “Avogadro’s number”

The Mole 1 mole of hydrogen = 6.022 x 1023 atoms 1 mole of carbon = 6.022 x 1023 atoms 1 mole of gold = 6.022 x 1023 atoms 1 mole of calcium = 6.022 x 1023 atoms See the pattern?

Understanding Check Suppose we invented a new collection unit called a “mep”. One mep contains 8 objects. A. How many paper clips in 1.0 mep? B. How many oranges in 2.0 meps? C. How many meps contain 40 gummy bears?

Molar Mass 1 mole of C atoms = 12.01 g 1 mole of Mg atoms = 24.31 g Molar mass: number of grams of one mole of an element or compound 1 mole of C atoms = 12.01 g 1 mole of Mg atoms = 24.31 g 1 mole of Cu atoms = 63.55 g What is the molar mass of the following? 1 mole of Br atoms? 1 mole of Sn atoms?

Molar Mass of Compounds We can also find the molar mass of compounds by ADDING the molar masses of each element Molar masses have units of g/mol Questions to ask yourself: 1. How many of each atom? 2. Molar mass of each element? 3. Total mass from each element? Then add them all together!

Molar Mass of Compounds Example #1 Find the molar mass of magnesium chloride, MgCl2 Questions to ask yourself: 1. How many of each atom? 2. Molar mass of each element? 3. Total mass from each element? Then add them all together!

Molar Mass of Compounds Example #2 Find the molar mass of calcium hydroxide. Questions to ask yourself: 1. How many of each atom? 2. Molar mass of each element? 3. Total mass from each element? Then add them all together!

Molar Mass Practice

More Practice with Molar Mass For each of the compounds below, determine the number of atoms for each element: 1. Cu3PO4 2. Fe2(SO2)3 3. potassium phosphide Used as a quick review on Day 2

More Practice with Molar Mass For each of the compounds below, determine the molar mass of the compound: 1. MnBr2 2. Sr(NO3)2 Used as a quick review on Day 2

Calculations with Molar Mass Grams Moles

Converting Grams to Moles Aluminum is often used for the structure of light-weight bicycle frames. How many moles of Al are in 81.0 grams of Al? 81.0 grams Al = ? moles Al Set up a ratio using the molar mass and what you are given in the problem and solve for the unknown… 81.0 g Al = 27.0 g Al x mol Al 1 mol Al 81.0 = 27.0x x = 3 moles Molar mass of Al

Converting Grams to Moles Practice How many moles does a 25.2 gram sample of CaCl2 contain?

Converting Moles to Grams Example The decomposition of hydrogen peroxide (H2O2) provides sufficient energy to launch a rocket. How many grams of H2O2 are needed for rocket launch that requires 5.00 moles H2O2? 5.00 moles H2O2 = ? g H2O2

Converting Moles to Grams Practice Aluminum satellite dishes are resistant to corrosion because the aluminum reacts with oxygen in the air to form a coating of aluminum oxide (Al2O3). This tough, resistant coating prevents any further corrosion. What is the mass of 9.45 mol of Al2O3?