Molar Conversions.

Slides:

Advertisements

Similar presentations

1. Determine the number of atoms in 2.50 mol Zn.

Advertisements

Molar Mass of Compounds

Unit 7: Stoichiometry Chapter 12.1 Pages

Conversion factors. Moles to particles Particles are atoms, molecules or ions 1 mole = Avagadro’s number of particles 1 mole___ or x

1 By definition: 1 atom 12 C “weighs” 12 amu On this scale 1 H = amu 16 O = amu Atomic mass is the mass of an atom in atomic mass units (amu)

Mass Relationships in Chemical Reactions Chapter 3.

 What is the percent composition of N and O in NO 2 ?

 Molar mass is the mass in grams of one mole of particles (atoms, ions, molecules, formula units).  Equal to the numerical value of the average atomic.

The Mole Chapter 9 What is a mole? A mole of a substance is the amount of that substance which contains 6 x particles of that substance.

Molar Mass & Conversions. The Mole mole (mol)- SI Unit for the amount of a substance that contains as many particles as there are atoms in exactly 12g.

Chapter 6 Chemical Quantities. How you measure how much?  You can measure mass, or volume, or you can count pieces.  We measure mass in grams.  We.

7.3 Using Chemical Formulas  Review  Mole: SI unit for the amount of a substance (contains avogadro’s number of particles)  Avogadro’s Number:

(4.3) The Mole and Molar Mass. THE MOLE IS THE SI UNIT FOR AMOUNT OF A SUBSTANCE. the mole represents 6.02 x particles. used for small particles.

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.

The Mole Theory Molar Mass. Mass of a Mole o Molar Mass- the mass of a mole of any element or compound (in grams) o Also called: o Formula mass – sum.

Chapter 7: Chemical Formulas and Chemical Compounds

Unit 2: Chemical Quantities SCH 4C. The Chemist’s Dozen  How many in a couple?  How many in a few?  How many in a dozen?  How many in a ream? 2 3.

Unit 6: Chemical Quantities

Chem Catalyst - What is the atomic mass of: - Cl? - Fe? - KCl? - H 2 O?

Counting Atoms Chapter 9. MOLE?? Moles of Particles In one mole of a substance, there are 6 x particles.

What is a Mole? To a chemist a mole is a counting unit for a substance. Abbreviated “mol”

The Molar Mass Lesson 2. Molar Mass The atomic mass of an element is the relative mass of the element. It is measured in grams and found on the periodic.

Chapter 10 The Mole. The atomic mass is found by checking the periodic table. The atomic mass is the number of grams of an element that is numerically.

Bellringer 3/28 How many moles of calcium are in 425g of Calcium (Ca)?

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

Mole (symbolized mol) = 6.02 x particles (602,000,000,000,000,000,000,000) Avogadro’s Number (N A ) molar mass – mass (usually in grams) of one mole.

Chemical Calculations Mole to Mass, Mass to Moles.

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

 Could you determine the amount of atoms in a substance?  How do scientists count when atoms and molecules are so small?

The Mole How We Count Atoms and Other Fundamental Particles.

Once you know the number of particles in a mole (Avogadro’s number = 6.02 x ) and you can find the molar mass of a substance using the periodic table,

1 mole = 6.02 X things This is called Avogadro’s number.

Molar Mass, Moles, and Molecules 7.3 Using Chemical Formulas.

The Mole. What is the a mole? A unit to measure the amount of a substance. Commonly abbreviated mol. The symbol is n.

How many moles of O would be in 0.75 moles of CO 2 ? Given: Find:

Unit: Chemical Quantities

Molar Conversions  How many days are in 1 week? 7 days same type of unit conversion works for moles UnitUsed to measureHow many? 1 weekDays7 1 moleNumber.

What is a mole?. A mole is a way of measuring. There are many kinds of measurements in the world. We all know that a dozen = 12 This can be a dozen of.

Avogadro’s Number and Molar Conversions Mole: the SI base unit used to measure the amount of a substance whose number of particles is the same as the number.

Mole Quantity Conversions. First, fold your paper in half like this. Not this.

Mass Relationships in Chemical Reactions Chapter 3.

MOLAR MASS CHAPTER 7-2.

MASS and MOLES Page 57 of INB.

Formula Weights © 2012 Pearson Education, Inc..

Glencoe: Chapter 11 Sections 11.1 & 11.2

The Mole: A Measurement of Matter

Using Conversions.

Unit: Chemical Quantities

Section 3.1 in class 1 mol = x 1023 things

How many ions are in a mole of chloride, Cl- ?

Simplest Chemical formula for a compound

mass of one mole of particles

Molar Conversions.

Molar Mass and Percent Composition

Molar Conversions (p.80-85, )

mass of one mole of particles

mole (symbolized mol) = 6.02 x particles

Molar Mass and Percent Composition

The Mole Mole: convenient measure of chemical quantities.

Formulas/MOF Objectives

Chapter 11 The Mole.

2 Step Mole Conversions: particles to Mass/Mass to Particles

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

Stoichiometry Chapter 11.

Moles practice Q’s Ch 10 Pearson.

Presentation transcript:

Molar Conversions

Mass of 1 mole is different for every substance 1mole = 6.022 x 1023 particles Particles = molecules, formula units, atoms Mass of 1 mole is different for every substance For elements mass of 1 mole = average atomic mass on the Periodic Table We can use these # as conversion factors to change from 1 unit to another.

3.96 x 1024 atoms Fe=______ mol Fe 1.26 mol K =______ atoms K

8.17 mol Ca =____g Ca 391.09 g Cl =______mol Cl

7.06 x 1023 atoms Al =_____g Al 47.02 g S =_____atoms S