CALCULATION OF MOLAR MASS X = X = X = LISTELEMENTSHERE CALCULATE THE MOLAR MASS OF K 2 Cr 2 O 7.

Slides:

Advertisements

Similar presentations

SKILLS Project Calculating Molar Masses. What are molar masses? A molar mass is the weight, in grams, of a mole of any element or compound. Each element.

Advertisements

Aim: How to determine the mass of a mole of an element and of a compound  DO Now: 1.With a partner, complete the worksheet from Friday. 2.If you have.

 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.

OVERVIEW OF HYDRATE CALCULATIONS CALCULATION OF THE WATER OF HYDRATION COEFFICIENT 1.FROM YOUR DATA, FIND MASS OF ANHYDROUS SALT ( SUBTRACT EMPTY BEAKER.

Chapter 7 Lecture Basic Chemistry Fourth Edition Chapter 7 Chemical Quantities 7.2 Molar Mass Learning Goal Given the chemical formula of a substance,

Molecular Formulas 1.Find empirical formula 2.Calculate molar mass of empirical formula 3.Molar mass of compound / molar mass of empirical formula (we’ll.

Molecular Formula. FormaldehydeFormaldehyde Acetic Acid Glucose.

Chem Catalyst Calculate the percent composition of ibuprofen (C13H18O2)

Empirical and Molecular Formulas

Calculating Percent Yield Chapter 10.3 Intro to Percent Composition The number of percent values in the percent in the percent composition of a compounds.

MOLAR MASS. What is Molar Mass  The SUM of the atomic masses of the atomic species as given in the molecular formula.  2 x g= g/ mole Cl.

Empirical and Molecular Formulas. Empirical Formula What are we talking about??? Empirical Formula represents the smallest ratio of atoms in a formula.

Unit 6: Chemical Quantities

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

Molar Mass and Molar Conversions Chapter 3 part III.

Conversion Factor Analysis practice Write down and answer these questions: 1)Molar Mass of C 6 H 12 O 6 = ____________ 2)How many C atoms in 1.74 mol of.

Percentages How do you calculate your percentage score in a test if you correctly answered 34 out of 47 questions? Answer: 33/47 x 100/1 = ? If 18 out.

Empirical formula & Percentage Composition Find the empirical formula of a compound given its % composition Find the molecular formula given empirical.

T HE M OLE Chapter 7. C ONCEPT M AP The mole Can be converted to Similar to: Dozen/ Gross/ set/ pair 6.02x10 ^23 Particles- atoms, molecules, etc. Molar.

Percent Composition, Empirical and Molecular Formulas.

Empirical Formula Calculations Problem: A compound is found to contain the following % by mass: 69.58% Ba 6.090% C 24.32% O What is the empirical formula?

Molar Mass of ionic compounds. Molar Mass Molar mass- same as atomic mass but for a compound rather than an atom. To determine the molar mass of any compound.

1 Chapter 10 Chemical Quantities 10.1 Molar Mass Copyright © 2008 by Pearson Education, Inc. Publishing as Benjamin Cummings.

IIIIII Formula Calculations The Mole. A. Percentage Composition n the percentage by mass of each element in a compound.

Percentage Composition

Understanding the mole is critical for your future success in chemistry as it is used in most chemical calculations. The Mole Chemistry 8(A)

MOLAR MASS OF A SUBSTANCE The molar mass of a substance is the SUM of the ATOMIN MASS NUMBERS of ALL the atoms in the substance. The molar mass of a substance.

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

Section 12.2: Using Moles (part 3). Mass Percent Steps: 1) Calculate mass of each element 2) Calculate total mass 3) Divide mass of element/ mass of compound.

Calculating Empirical and Molecular Formulas. Calculating empirical formula A compound contains 79.80% carbon and 20.20% hydrogen. What is the empirical.

Starter  Finish the study guide from yesterday. Ch. 7B Using Chemical Formulas 7B.4 Determining Molecular Formulas.

USING MOLAR CONVERSIONS TO DETERMINE EMPIRICAL AND MOLECULAR FORMULAS.

Wake-up Determine the empirical formula for the following: 28.4% Copper and 71.6% Bromine.

(4.6/4.7) Empirical and Molecular Formulas SCH 3U.

WEIGHTED AVERAGE MASS NUMBER: 1)The mass number on the periodic table is calculated from the weighted average of the most abundant isotopes. 2) Abundance.

MOLAR MASS Molar mass of a substance = mass in grams of one mole of the substance. A compound’s molar mass is NUMERICALLY equal to its formula mass. Formula.

IIIIII Molecular Formula Notes The Mole. C. Molecular Formula n “True Formula” - the actual number of atoms in a compound CH 3 C2H6C2H6 empirical formula.

MOLAR MASS CHAPTER 7-2.

CALCULATION OF MOLAR MASS

Percent Composition.

6.7 Empirical Formula and 6.8 Molecular Formulas

Calc.: Gram Formula Mass

Empirical Formula.

Chapter 7 Chemical Quantities

Empirical Formulas a formula that represents the simplest ratio among the elements of a compound.

You need a calculator AND periodic table for today’s notes

Simplest Chemical formula for a compound

Percentage Composition

– the percent by mass of each element in a compound.

Percent Composition.

LECTURE 4.3 – MOLAR MASS.

Empirical and Molecular Formulas

Molar Mass of ionic compounds

Molar Mass and Percent Composition

Calculation Of Molar Mass

Molar Mass and Percent Composition

1/9/18 Opener How many moles are there if you have 3.08 x 1024 particles of Ag? Please get out your weekend homework assignment, periodic table, & a calculator.

LAB 5-MASS to MOLE to MASS STOICHIOMETRY

Unit 9: The Mole Molar Mass Notes.

Unit 9: The Mole Molar Mass Notes.

Unit 8: The Mole Molar Mass Notes.

Chapter 7 Chemical Quantities

Empirical and Molecular Formulae

Calculation of Molecular Formula

(you will need a calculator and your periodic table)

MOLAR MASS OF A SUBSTANCE

Molecular Formula Acetic Acid Glucose Formaldehyde.

Determining a Molecular Formulas:

Presentation transcript:

CALCULATION OF MOLAR MASS X = X = X = LISTELEMENTSHERE CALCULATE THE MOLAR MASS OF K 2 Cr 2 O 7

CALCULATION OF MOLAR MASS KX = CrX = OX = LISTELEMENTSHERE CALCULATE THE MOLAR MASS OF K 2 Cr 2 O 7

CALCULATION OF MOLAR MASS K2X = Cr2X = O7X = LISTELEMENTSHERE LIST SUBSCRIPTS MULTIPLY By atomic mass K 2 Cr 2 O 7

CALCULATION OF MOLAR MASS K2X g/MOL = Cr2X g/MOL = O7X g/MOL = LISTELEMENTSHERE LIST SUBSCRIPTS MULTIPLY By atomic mass INSERT ATOMIC MASS FROM PERIODIC TABLE

CALCULATION OF MOLAR MASS K2X g/MOL = g Cr2X g/MOL = g O7X g/MOL = g LISTELEMENTSHERE LIST SUBSCRIPTS MULTIPLY By atomic mass INSERT ATOMIC MASS FROM PERIODIC TABLE Add SUBTOTALS g/mol