Review: Molar Mass of Compounds Ex. Molar mass of CaCl 2 Avg. Atomic mass of Calcium = 40.08g Avg. Atomic mass of Chlorine = 35.45g Molar Mass of calcium.

Slides:

Advertisements

Similar presentations

Molar Mass of Compounds

Advertisements

Stoichiometry SAVE PAPER AND INK!!! When you print out the notes on PowerPoint, print "Handouts" instead of "Slides" in the print setup. Also, turn off.

7.3 USING CHEMICAL FORMULAS APRIL 27, USING CHEMICAL FORMULAS Formula Masses: Sum of all the average atomic masses of all atoms represented.

Quantitative Composition of Compounds Define the MOLE Determine molar mass of compounds Calculate percent composition of compounds Distinguish the differences.

Mass Relationships in Chemical Reactions Chapter 3.

Unit 5 Moles and Stoichiometry Lesson 2: The Molar Relationships.

Percentage Composition

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.

The Mole Concept Chapter 9 CHM 130 GCC.

Unit 6 The Mole: % Composition and Emperical Formula

Review: Molar Mass of Compounds

Mass Conservation in Chemical Reactions Mass and atoms are conserved in every chemical reaction. Molecules, formula units, moles and volumes are not always.

It’s time to learn about.... What's The Difference Between Roast Beef And Pea Soup? Anyone Can Roast Beef.

Chemical Formulas The Mole One-Step Molar Conversions February 24, 2014.

Chapter 10: Chemical Quantities

Stoichiometry: The Mole Stoichiometry The study of the quantitative aspects of chemical reactions.

Ch. 10: The Mole *Part of Sec. 13.2: Avogadro’s Principle (pages ) Sec. 10.3: Moles of Compounds (pages 333 – 334 & )

Chapter 10 “Chemical Quantities”

Ideal gases and molar volume

Atomic Mass and Formula Mass Atomic mass = mass of an atom expressed relative to the mass assigned to carbon-12 (carbon-12 is used as the standard) Atomic.

The MOLE CH 11.

Chapter 7: Chemical Formulas and Chemical Compounds

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

Stoichiometry Chemistry 11 Chapter 2 Pg The Mole A counting unit Similar to a dozen, except instead of 12, it’s 602,000,000,000,000,000,000,000.

UNIT V The Mole Concept. V.1 AVOGADRO’S HYPOTHESIS Avogadro’s hypothesis : Equal volumes of different gases contain the same number of particles (at the.

Stoichiometry Chemistry I: Chapter 9 Molar Mass of Compounds The molar mass (MM) of a compound is determined the same way, except now you add up all.

Chapter 10 The Mole.

Mass, the Mole, and Avogadro’s Number (Molar Mass)

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

Atoms and Molecules Formula Unit Mass The formula unit mass of a substance is a sum of the atomic masses of all atoms in a formula unit of a compound.

It’s time to learn about.... Stoichiometry Stoichiometry : Mole Ratios to Determining Grams of Product At the conclusion of our time together, you should.

Unit: Chemical Quantities

It’s time to learn about . . .

The Mole The Basic Chemical Unit. A Mole is : A chemical quantity A Mole of any substance is Chemically equivalent to a mole of any other substance.

7.2 More Mole Conversions!!!. - Molecular Oxygen = O 2 - Atomic Oxygen = O from the periodic table 7 elements that exist as diatomic molecules (MEMORIZE)

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

Stoichiometry The Mole A counting unit A counting unit Similar to a dozen, except instead of 12, it’s 602,000,000,000,000,000,000,000 Similar to a dozen,

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

12.1 Test Review. What is percent composition? the percent (by mass) of all the elements in a compound.

Compound Stoichiometry. The Mole Unit for dealing with the number of atoms, ions, or molecules in a common sized sample Relationship between Moles and.

The Mole 6.02 X The Mole 1 pair = 2 representative particles1 pair = 2 representative particles 1 dozen = 12 representative particles1 dozen =

It’s time to learn about.... Stoichiometry Stoichiometry : Mole Ratios to Determining Grams of Product At the conclusion of our time together, you should.

MOLE CALCULATIONS. Moles to Mass Find the mass of one mole of NaCl 58.5g Find the mass of two moles of NaCl 117.0g How did you get the answer? 2 moles.

The Mole Chemistry’s Unit of Convenience. Calling particles by the right name Particles of a type of a(n)… are called…  ion……………………  element………………..

Chapter 7 Chemical Quantities or How you measure how much? You can measure mass, volume, or you can count pieces of a substance. We measure mass in grams.

The Mole Calculating -Molecular Weight -Formula Weight -Molar Mass.

Objective: To reintroduce the mole and introduce two mole conversions Do Now: Solve each proportion = x2. 10 = x.

Moles and Molarity. I CAN calculate MOLES and MOLARITY from Formula Weight (FW) data.

An Introduction…... Atomic Mass: Where can you find it? An atomic mass unit is defined as 1/12 the weight of the carbon-12 isotope. The old symbol was.

SOL R EVIEW 5 The Mole A M OLE OF P ARTICLES A M OLE OF P ARTICLES C ONTAINS 6.02 X PARTICLES = 6.02 x C atoms = 6.02 x H 2 O molecules.

Lecture 5. THE MOLE Avogadro's number The mole is used when we're talking about numbers of atoms and molecules (tiny particles).moleatomsmolecules The.

Stoichiometry II.

Stoichiometry Review.

Formula Weights © 2012 Pearson Education, Inc..

Atomic Mass is the Mass of One Mole of an Element

Unit 7: The Mole.

Remembering Scientific Notation…..

Ch 7.3 Using Chemical Formulas

Chapter 10 – Chemical Quantities

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

Ch. 7: Chemical Formulas and Compounds

Ch. 7: Chemical Formulas and Compounds

Add to U7-3 Warm-Ups Ca3(PO4)2 1 mol 3 mol Ca 2 mol P 8 mol O

Presentation transcript:

Review: Molar Mass of Compounds Ex. Molar mass of CaCl 2 Avg. Atomic mass of Calcium = 40.08g Avg. Atomic mass of Chlorine = 35.45g Molar Mass of calcium chloride = g/mol Ca + (2 X 35.45) g/mol Cl  _110.98______ g/mol CaCl 2 20 Ca 40.08a 17 Cl Cl

Practice Calculate the Molar Mass of calcium phosphate Formula = Ca 3 (PO 4 ) 2 Masses elements: Ca = 40.08g/mole P = g/mole O = g/mole Molar Mass = (40.08 g/mole)(3) + (30.97 g/mole)(2) + (16 g/mole)(8) = g/mole

Mole Conversions

Atoms or Molecules Moles Mass (grams) Divide by 6.02 X Multiply by 6.02 X Multiply by atomic/molar mass from periodic table Divide by atomic/molar mass from periodic table

Review 5.7 kg = ?? mg

3.5 dozen roses = ?? Roses 2.5 mol roses = ?? Roses (use Avogadro's #)

Practice Find the mass of 0.89 mol of CaCl 2. Find the molar mass of the compound: Make the conversion:

Practice A bottle of PbSO 4 contains g of compound. How many moles of PbSO 4 are in the bottle?

molar mass Avogadro’s number Grams Moles particles/formula units/atoms Everything must go through Moles!!! Calculations

Practice Determine the number of atoms that are in 0.58 mol of Se.

Practice How many moles of barium nitrate (BaNO 3 ) contain 6.80 x formula units?

molar mass Avogadro’s number Grams Moles particles/formula units/atoms Everything must go through Moles!!! Calculations

2.5 g Roses = ?? Roses Atomic mass of 1 Rose is 3.0 g/mol

Multi-step Practice How many molecules are in 5.1g of TiO 2 ?

Multi-step Practice If you burned 6.10 x molecules of ethane (C 2 H 6 ), what mass of ethane did you burn?

Molar Volume Definition: The volume of one mole of an ideal gas at standard conditions (STP) equal to 22.4 L. STP = standard temperature and pressure which is 0ºC and 1 atmospheric pressure 1 mole gas at STP = 22.4 L

Practice A container with a volume of 893L contains how many moles of air at STP?

Practice A chemical reaction produced 0.37 mol of N 2 gas. What volume will the gas occupy at STP?