Copyright © by Houghton Mifflin Company. All rights reserved.

Slides:

Advertisements

Similar presentations

Chapter 3: Stoichiometry Stoichiometry - The study of quantities of materials consumed and produced in chemical reactions. In order to understand stoichiometry,

Advertisements

Chapter 3 Stoichiometric

Stoichiometry Chapter 3. Atomic Mass 1961: Atomic Mass is based on 12 C 1961: Atomic Mass is based on 12 C 12 C is assigned a mass of EXACTLY 12 AMU 12.

Stoichiometry A measure of the quantities consumed and produced in chemical reactions.

Copyright©2000 by Houghton Mifflin Company. All rights reserved. 1 Chemical Stoichiometry Stoichiometry - The study of quantities of materials consumed.

Chapter Three: STOICHIOMETRY.

Chemical Reactions Unit

Chapter 3 Stoichiometry. Section 3.1 Atomic Masses Mass Spectrometer – a device used to compare the masses of atoms Average atomic mass – calculated as.

Chapter 3 Stoichiometry.

General Stoichiometry

Copyright©2000 by Houghton Mifflin Company. All rights reserved. 1 Chapter 3 Stoichiometric Atomic Masses, Mole concept, and Molar Mass (Average atomic.

Chapter 3: STOICHIOMETRY Stoichiometry - The study of quantities of materials consumed and produced in chemical reactions.

Copyright©2000 by Houghton Mifflin Company. All rights reserved. 1 Chapter 3 Stoichiometric Atomic Masses, Mole concept, and Molar Mass (Average atomic.

Copyright©2000 by Houghton Mifflin Company. All rights reserved. 1 Chemical Stoichiometry Stoichiometry - The study of quantities of materials consumed.

and cooking with chemicals

By, Rachel Smith and Matt Rose. Basics It is used to find the quantities of materials consumed and produced in chemical reactions Average mass: total.

Atomic Mass The Mole Molecular Weight Unit 8 – Chemical Quantities 1.

Chapter 3 Stoichiometry: Calculations with Chemical Formulas and Equations.

The Mole and Chemical Composition

The Mole and Chemical Composition

Stoichiometry Atomic Mass Atomic Mass Molar Mass of an Element Molar Mass of an Element Molecular Mass Molecular Mass Percent Composition Percent Composition.

Chapter 3 Stoichiometry. Atomic Mass Carbon-12 is assigned a mass of exactly atomic mass units (amu) Masses of other elements are compared to Carbon-12.

1 Chapter 3 Stoichiometry: Calculations with Chemical Formulas and Equations.

A.P. Ch. 3 Review Work Stoichiometry. Atomic Mass Average of isotope masses based on their abundance Ex. Carbon has atomic mass of amu 12 C has.

Chapter 3 Stoichiometric

Copyright©2000 by Houghton Mifflin Company. All rights reserved. 1 Chemical Stoichiometry Stoichiometry - The study of quantities of materials consumed.

Quantitative Chemistry Chapter 3. Objectives Learning objective 1.2 The student is able to select and apply mathematical routines to mass data to identify.

Chapter 7: Chemical Formulas and Chemical Compounds

Copyright©2004 by Houghton Mifflin Company. All rights reserved. 1 Introductory Chemistry: A Foundation FIFTH EDITION by Steven S. Zumdahl University of.

© 2012 Pearson Education, Inc. Finding Empirical Formulas.

By Steven S. Zumdahl & Donald J. DeCoste University of Illinois Introductory Chemistry: A Foundation, 6 th Ed. Introductory Chemistry, 6 th Ed. Basic Chemistry,

Copyright © Houghton Mifflin Company. All rights reserved.4–14–1 5.6 Chemical Equations A chemical equation uses symbols and formulas to describe the.

Chapter 9 Chemical Quantities. Copyright © Houghton Mifflin Company. All rights reserved. 9 | 2 Information Given by the Chemical Equation Balanced equations.

 The weighted average of its naturally occurring isotopes. Chemical Name Atomic # Chemical Symbol Atomic Mass (Average Atomic Mass)

Jino Park Chris Yang.  Average mass=total mass / number of objects  ex) each jelly bean is 5g, you want 100 jelly beans.

Chapter 3 sample problems. Average atomic mass Calculate the average atomic mass of magnesium given the following isotopic mass and mass percent data.

Section 2: Formula Mass Chapter 7: Chemical Composition.

Chapter 3 Stoichiometry. Chapter 3 Copyright © Cengage Learning. All rights reserved 2 Chemical Stoichiometry Stoichiometry – The study of quantities.

1.Each element has a different symbol 2.The formula for a compound shows the elements in the compound 3.It also shows the ratio of the atoms of different.

Chemical Stoichiometry: The Mole Concept Mr. Forte Atascadero High School.

Stoichiometry Section 1 – Introduction to Stoichiometry, and Quantitative Relationships of Chemical Formulas Section 2 – Mathematics of Chemical Equations.

Topic 3 The Mathematics of Formulas and Equations

Copyright©2004 by Houghton Mifflin Company. All rights reserved. 1 Introductory Chemistry: A Foundation FIFTH EDITION by Steven S. Zumdahl University of.

Percent Composition Determine the mass percentage of each element in the compound. Determine the mass percentage of each element in the compound. Mass.

Chemical Reactions Balancing Equations. n In order to show that mass is conserved during a reaction, a chemical equation must be balanced n You do this.

By Steven S. Zumdahl & Donald J. DeCoste University of Illinois Introductory Chemistry: A Foundation, 6 th Ed. Introductory Chemistry, 6 th Ed. Basic Chemistry,

Chapter 3 Stoichiometry The study of the quantities of materials produced and consumed in chemical reactions Relative Atomic Mass- atoms are small and.

Stoichiometry: Calculations with Chemical Formulas and Equations

Chemical Stoichiometry

Calculations with Chemical Formulas and Equations

A.P. Ch. 3 Review Work Stoichiometry.

AP CHEMISTRY NOTES Ch 3 Stoichiometry.

Chapter 3 Stoichiometry.

Chapter 3 Stoichiometry.

Mathematics in Chemistry

Atomic Mass Unit: amu (atomic mass unit) amu is defined as a mass exactly equal to on-twelfth the mass of Carbon-12 atom amu = 1/12 of carbon-12 Hydrogen.

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.

Molecular Formula number and type of atoms covalent compounds

Mass Relationships in Chemical Reactions

Unit 3: Stoichiometry The Mole, Molar Mass, % Composition, Balancing Chemical Equations, Limiting Reagent, Percent Yield.

Chemical Reactions, Chemical Equations, and Stoichiometry

Stoichiometry Definition

Information Given by Chemical Equations

Chemical Stoichiometry

Each element has a different symbol

9.1/9.2 Stoichiometric Calculations

Stoichiometry Chapter 11.

Mass Relationships in Chemical Reactions

Chemistry Chapter 3 Section 3

Presentation transcript:

Copyright © by Houghton Mifflin Company. All rights reserved. Chapter 3 Stoichiometry Copyright © by Houghton Mifflin Company. All rights reserved.

Measurement of Atomic Mass Most elements occur in nature as mixture of isotopes; thus atomic masses are usually average values. The modern system of atomic masses, instituted in 1961, is based on 12C as the standard. In this system 12C is assigned a mass of exactly 12 atomic mass units (amu), and the masses of all other atoms are given relative to this standard. Copyright © by Houghton Mifflin Company. All rights reserved.

Copyright © by Houghton Mifflin Company. All rights reserved. Mass spectrometer Copyright © by Houghton Mifflin Company. All rights reserved.

Copyright © by Houghton Mifflin Company. All rights reserved. Atomic Mass of Carbon 12C and 13C are analyzed in a mass spectrometer, the ratio of their masses is found to be: Mass 13C/Mass 12C=1.0836129 Mass of 13C=(1.0836129)(12amu)=13.003355 amu The natural carbon is composed of 98.89% 12C atoms and 1.11% 13C atoms. (0.9889)(12 amu)+(0.0111)(13.0034 amu)=12.01 amu Copyright © by Houghton Mifflin Company. All rights reserved.

Copyright © by Houghton Mifflin Company. All rights reserved. Peaks of neon injected Copyright © by Houghton Mifflin Company. All rights reserved.

Bar graph of neon injected Copyright © by Houghton Mifflin Company. All rights reserved.

Percent Composition of Compounds 1 mole C2H5OH Mass of C=2 mol X 12.011g/mol=24.022 g Mass of H=6 mol X 1.008 g/mol=6.048 g Mass of O=1 mol X 15.999 g/mol=15.999 g Mass of 1 mol of C2H5OH=46.069 g Mass percent of C=(24.022/46.069)x100%=52.144% Mass percent of H=(6.048/46.069)X100%=13.13% Mass percent of O=(15.999/46.069)X100%=34.728% Copyright © by Houghton Mifflin Company. All rights reserved.

Determining the Formula of a Compound Copyright © by Houghton Mifflin Company. All rights reserved.

Copyright © by Houghton Mifflin Company. All rights reserved. Chemical Equations Need to know the reactants and products Balancing a chemical equation Specify the physical states of the reactants and products Stoichiometric calculations Calculations involving a limiting reaction Copyright © by Houghton Mifflin Company. All rights reserved.