Objectives To understand the definition of molar mass

Slides:

Advertisements

Similar presentations

Molar Mass of Compounds

Advertisements

Chapter 10: Chemical Quantities

Chapter 6 Chemical Composition.

1 Formula mass is the sum of the atomic masses (in amu) in a formula unit of an ionic compound. 1Na22.99 amu 1Cl amu NaCl amu For any ionic.

60,200,000,000,000,000,000, x

Chapter 6 Chemical Composition. Element Song Memorize for Extra Credit– 3 points toward your worst test grade – You may video tape yourself singing it.

Calculating Moles and Number of Atoms

Objectives To understand the definition of molar mass

Molar Mass & Percent Composition

Calculating Percent Composition Mrs. Page 10 th Chemistry.

Section 3: Moles of Compounds Chemical Composition.

Chapter 7: Chemical Formulas and Chemical Compounds

Percent Composition: The percent by mass on an element in a compound Is the number of grams of the element in a formula divided by the total mass of the.

Chemical Formulas and Moles. Example: 1.water (C) – every molecule of water contains 2 atoms of hydrogen & one atom of oxygen - 2 molecules of H 2 O would.

Empirical Formulas and Molar Mass: Part 3-Molar Mass 1.

1 Chapter 10 “Chemical Quantities” Yes, you will need a calculator for this chapter!

It’s time to learn about.... Stoichiometry: Percent Composition At the conclusion of our time together, you should be able to: 1. Determine the percent.

3.10 Determining a Chemical Formula from Experimental Data

Section 10.3 Percent Composition and Chemical Formulas.

Percent Composition, Empirical and Molecular Formulas.

E: Moles and Molar Masses The Mole: The most important concept you’ve never heard about A mole of objects contains the same number of objects as there.

Percent Composition. Percent Composition from the Chemical Formula % mass = mass of element in 1 mole of compound molar mass of compound Then multiply.

Empirical Formula vs. Molecular Formula Empirical formula: the formula for a compound with the smallest whole-number mole ratio of the elements Molecular.

Percentage Composition

Section 6.1 Atoms and Moles 1.To understand the concept of average mass 2.To learn how counting can be done by weighing 3.To understand atomic mass and.

Percent composition of an element in a compound = n x molar mass of element molar mass of compound x 100% n is the number of moles of the element in 1.

Percent Composition and Empirical Formula. Percent Composition General Strategy Convert whole number ratio (moles) to mass percent Formula  Mass Percent.

10-3: Empirical and Molecular Formulas. Percentage Composition The mass of each element in a compound, compared to the mass of the entire compound (multiplied.

Entry Task: Feb 22 nd Friday Entry Task Question: Write the question down Calculate the % H 2 O in the compound NiCl 2 6 H 2 O. Provide answer TURN IN.

Percentage Composition. Percent partwhole X 100% mass of element mass of compound X 100% X 100% percent by mass =

Section 6.2 Molar Mass and Percent Composition 1.To understand the definition of molar mass 2.To learn to convert between moles and mass 3.To learn to.

Warm Up: Jan. 5 th –This is Ch. 7.4 notes –Give the oxidation numbers for the following atoms 1.NaPO 4 2.HClO 3 3.C 6 H 12 O 6.

Calculating Empirical Formulas

% Composition, Empirical and Molecular Formulas notes.

Percent Composition. What is it? Percent composition is the percent by mass of each element present in a compound.

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

Unit 6 Section 1 – Measuring Matter, and the Mole Section 2 – Mass and Moles, Moles and Compounds, and Percent Composition of a Compound Section 3 – Empirical.

EMPIRICAL AND MOLECULAR FORMULA.  Empirical Formula – The lowest whole number ratio of atoms in a compound. Example: The empirical formula for the compound.

Section 6.2 Molar Mass and Percent Composition 1.To understand the definition of molar mass 2.To learn to convert between moles and mass 3.To learn to.

MOLAR MASS CHAPTER 7-2.

Percent Composition.

Calculate the percent by mass composition of C2H4O2..

Empirical and Molecular Formulas

Glencoe: Chapter 11 Sections 11.1 & 11.2

Chapter 7 Chemical Quantities

Calculating Empirical Formulas

Percentage Composition from Formulas

Chapter 6 Chemical Composition.

% Composition & Empirical Formulas

Percent Composition & Empirical and Molecular Formulas

Moles and Mass -The molar mass of a compound (aka molecular mass or molecular weight) is the sum of the atomic masses of each atom in the compound -Molar.

Section 3.1 The Mole and Molar Mass

7.5 Naming Acids.

EMPIRICAL FORMULA The empirical formula represents the smallest ratio of atoms present in a compound. The molecular formula gives the total number of atoms.

Percent Composition and Chemical Formulas

Avogadro’s number, the mole, molarity, molar mass

LECTURE 4.3 – MOLAR MASS.

Empirical and Molecular Formulas

Chapter 7.3 molar mass of a compound –

Chapter 7 Chemical Quantities

Empirical Formulas Unit 5.

Calculation Of Molar Mass

Percentage Composition

Percentage Composition

Formulas/MOF Objectives

The Mole and Mole Concepts

Percentage Composition

Notes Ch. 10.3a Calculating Percent Composition

Presentation transcript:

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. The molar mass of a compound is obtained by summing the masses of the component atoms.

A. Molar Mass For compounds containing ions the molar mass is obtained by summing the masses of the component ions.

A. Molar Mass Calculations Using Molar Mass Moles of a compound = Mass of a sample (g) = (moles of sample)(molar mass of compound)

B. Percent Composition of Compounds Percent composition consists of the mass percent of each element in a compound: Mass percent =