'Molar mass' diaporamas de présentation

Unit Objectives. 1)understand the evolution of models of the atom: Dalton, Thomson, Rutherford, Bohr, the ‘quantum model 2 ) understand the meaning of mass number, atomic (proton) number. 3) be able to write and work with full atomic symbols

Chemistry 14.4. Ideal Gases and Real Gases. Under what conditions are real gases most likely to differ from ideal gases?

Chem 106: Lab Week 8. A. E. G. C. D. B. Sign in Pick up graded papers Sit with your Molview Team from last week. Chem 106: Class/ Lab Week 8. Three activities must be accomplished today:

Section 4 - Gases: Mixtures and Movements. Introduction. A list of gear for an expedition to Mount Everest includes climbing equipment, ski goggles, a down parka with a hood, and most importantly compressed-gas cylinders of oxygen.

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. Therefore, a 12.01 g sample of carbon contains 6.02 × 10 23 carbon atoms. The Mole.

Chapter 11. Titrations: Taking Advantage of Stoichiometric Reactions.

CALCULATIONS INVOLVING COLLIGATIVE PROPERTIES. Section 18.4. AFTER READING SECTION 18.4, YOU SHOULD KNOW:. How to calculate molality (m) How to calculate the molar mass of a molecular compound from the freezing point depression or boiling point elevation. MOLALITY .

Phase diagram of Carbon. Allotropes: elemental substances that occur in more than one crystalline form. Phase Diagram of Liquid Crystals. http://invsee.asu.edu/nmodules/liquidmod/spatial.html. nematic. smectic. cholesteric. smectic. nematic. cholesteric.

Counting Atoms. Chemistry is a quantitative science - we need a "counting unit." The MOLE 1 mole is the amount of substance that contains as many particles (atoms or molecules) as there are in 12.0 g of C-12. AvogadroPaper. The Mole is Developed. Avogadro’s number.

Syllabus Chemistry 101 Fall 2006 Sec. 528-538 (MWF 12:40-1:30) RM 100 HELD Professor: Dr. Earle G. Stone Office: Room 408 Heldenfels (HELD) Telephone: 845-3010 (no voice mail) or leave a message at 845-2356 email: stone@mail.chem.tamu.edu

Introductory Chemistry , 2 nd Edition Nivaldo Tro. Chapter 11 Gases. Roy Kennedy Massachusetts Bay Community College Wellesley Hills, MA. 2006, Prentice Hall. 11.2 Kinetic Molecular Theory. Properties. Indefinite Volume Indefinite Shape Rapidly moving particles that do not interact.

Unit 5. Moles, Mole Conversions, Percent Composition, Empirical/Molecular Formulas. So…. Please make sure you focus during this unit! It can be intimidating, but it doesn’t have to be But, it will require your concentration and engagement, just how this course has proceeded thus far

Objectives. To understand the definition of molar mass To learn to convert between moles and mass To learn to calculate the mass percent of an element in a compound . A. Molar Mass . A compound is a collection of atoms bound together. . 1 mole of methane.

Molarity. Concentration Based on Mass. Concentration - amount of solute dissolved in a given amount of solution Concentration of a solution has an effect on Physical properties Melting and boiling points Chemical properties Solution reactivity. Moles and Equivalents.

Chapter 10 Chemical Quantities. Get ready for some serious finger exercise!. 10.1 The Mole: Measurement of Matter. OBJECTIVES: Describe methods of measuring the amount of something Define Avogadro’s number as it relates to a mole of a substance

Ch. 7 Part 1 – The Mole. Molar Conversions (p.80-85, 221-226). VERY. A large amount!!!!. A. What is the Mole?. A counting number (like a dozen) Avogadro’s number (N A ) 1 mol = 6.02  10 23 items. A. What is the Mole?. HOW LARGE IS IT???.

10.1. Measuring Matter. Measuring Matter What are three methods for measuring the amount of something?. 10.1. Measuring Matter. You often measure the amount of something by one of three different methods—by count, by mass, and by volume. 10.1. for Sample Problem 10.1. 10.1.

Modern Chemistry Chapter 3. Atoms: The Building Blocks of Matter. Chapter 3 Sec 1. The Atom: From Philosophical Idea to Scientific Theory In Ancient Greece (400B.C.) Democritus was the first on record ever to say matter was composed of atoms Atom is based on the Greek for indivisible.

Topic 14. Table of Contents. Topic 14. Topic 14: The Mole. Basic Concepts. Additional Concepts. The Mole: Basic Concepts. Topic 14. Measuring Matter.

Percentage Composition. Percentage composition. Indicates the relative amount of each element present in a compound. Calculating percentage composition. Step 1 : Calculate molar mass Step 2 : Divide the subtotal for each element’s mass by the molar mass.