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The Mole

The Mole

The Mole The Mole It's not a spy, a machine for digging tunnels, a burrowing animal, or a spot of skin pigmentation - it's - a unit of measurement containing about 6.02 x 10 23 particles. Chemists created the mole as their own counting unit. The Chemical Mole 1mole of atoms is

By andrew
(996 views)

SciDose LLC An Overview

SciDose LLC An Overview

SciDose LLC An Overview. Joseph Bohan, CEO and Co-Founder Amherst Entrepreneurship/Innovation Day March 4 th , 2011. SciDose LLC Background .

By kylia
(641 views)

Writing Empirical and Molecular Formulas

Writing Empirical and Molecular Formulas

Writing Empirical and Molecular Formulas. What is an empirical formula?. A chemical formula in which the ratio of the elements are in the lowest terms is called an empirical formula . . Example:.

By elan
(304 views)

pH of Very Weak Acids; (b) pH of Dilute Solutions of Strong Acids;

pH of Very Weak Acids; (b) pH of Dilute Solutions of Strong Acids;

Lecture #22. pH of Very Weak Acids; (b) pH of Dilute Solutions of Strong Acids; . Chemistry 142 B Autumn Quarter 2004 J. B. Callis, Instructor. Acid Solutions in Which Water Contributes to [H + ]. Previously, we have assumed that the acid is the dominate source of H + ions.

By baby
(374 views)

Chapter 5 Gases

Chapter 5 Gases

Chapter 5 Gases. A Gas- Uniformly fills any container Mixes completely with any other gas Can easily be compressed Exerts pressure on its surroundings. The properties of a gas depends upon four variables- Pressure (P) Is equal to force/unit area Measured by a barometer

By adora
(242 views)

Gas Stoichiometry

Gas Stoichiometry

Gas Stoichiometry . Non-Standard Conditions. Nonstandard Conditions. Gas volume changes dramatically when pressure or temperature change. Key: The mole-mol calculation must take place at STP. Doing the Calculations. Given a volume of gas at other than STP?

By jud
(266 views)

1) a) H = 2.06%, S = 32.69%, O = 65.25% b) Ca = 54.09%, O = 43.18%, H = 2.73% 2) 24 x .787 + 25 x .101 + 26 x .112 =

1) a) H = 2.06%, S = 32.69%, O = 65.25% b) Ca = 54.09%, O = 43.18%, H = 2.73% 2) 24 x .787 + 25 x .101 + 26 x .112 =

1 mol O 2. 2 mol MgO . x . x . 32.00 g O 2. 1 mol O 2. 40.31 g MgO. x . 1 mol MgO. 1) a) H = 2.06%, S = 32.69%, O = 65.25% b) Ca = 54.09%, O = 43.18%, H = 2.73% 2) 24 x .787 + 25 x .101 + 26 x .112 = 24.3 3) a) 98.08 g/mol, b) 759.70 g/mol

By magda
(177 views)

Outline			1/12/07

Outline 1/12/07

Outline 1/12/07. First Chem seminar today… Pick up CAPA #2 - in front ChemBoard Assignment = Monday Fill in keypad response unit #’s… Today: Surfactants Colligative Properties Calculating Colligative Effects. Surfactants:.

By kael
(80 views)

Phthalate Plasticizers

Phthalate Plasticizers

Phthalate Plasticizers. CE 435 Introduction to Polymers Brian Amato Sarah Karl Carla Ng. Timeline (history). European Parliament calls for alternatives to phthalates. IARC Re-classifies DEHP as non-carcinogenic. First Plasticizer. DEHP Declared Carcinogenic. Phthalates Introduced. 1860.

By annalise
(319 views)

Stoichiometry Chapter 10

Stoichiometry Chapter 10

Stoichiometry Chapter 10. The Mole. A counting unit Similar to a dozen, except instead of 12, it’s 602,000,000,000,000,000,000,000 6.02 X 10 23 (in scientific notation) This number is named in honor of Amedeo Avogadro (1776 – 1856). Molar Mass. The Mass of 1 mole (in grams)

By jodie
(71 views)

Meet the Mole.

Meet the Mole.

Meet the Mole. Moles. The mole is a unit of measurement. The unit can be defined in multiple ways. (We’ll learn 3 today.) In its simplest terms, it represents a specific number. Dozen = what number? Pair = what number? Baker’s dozen = what number? Mole = 6.02 x 10 23

By dylan
(181 views)

Chapter 4 Calculation Used in Analytical Chemistry

Chapter 4 Calculation Used in Analytical Chemistry

Chapter 4 Calculation Used in Analytical Chemistry. Some Important Units of Measurement

By evanthe
(625 views)

The Mole

The Mole

The Mole. Q: how long would it take to spend a mole of $1 coins if they were being spent at a rate of 1 billion per second?. Mollionaire. Q: how long would it take to spend a mole of $1 coins if they were being spent at a rate of 1 billion per second? A: $ 6.02 x 10 23 / $1 000 000 000

By vadin
(93 views)

The Mole

The Mole

The Mole. Q: how long would it take to spend a mole of $1 coins if they were being spent at a rate of 1 billion per second?. Background: atomic masses. Look at the “atomic masses” on the periodic table. What do these represent? E.g. the atomic mass of C is 12 (atomic # is 6)

By nuwa
(139 views)

Lesson Objectives Calculate percent composition from a chemical formula

Lesson Objectives Calculate percent composition from a chemical formula

Lesson Objectives Calculate percent composition from a chemical formula Determine the empirical and molecular formulas for a substance. Percent Composition, Empirical, and Molecular Formulas. Percent composition describes the contribution of each element to the total mass of a compound

By valiant
(377 views)

Basic mole calculations (pp.112-124) % composition problems/combustion analysis (pp.384-392)

Basic mole calculations (pp.112-124) % composition problems/combustion analysis (pp.384-392)

Where we’ve been for ~ 3 weeks now:. Basic mole calculations (pp.112-124) % composition problems/combustion analysis (pp.384-392) Reaction balancing (pp. 392-395 ) `body parts’ calculations (no formal section in text) Next: Reaction stoichiometry ( pp. 396-406 ).

By homer
(159 views)

Moles!

Moles!

Moles!. Review!. How many Hydrogen atoms are in 2.5 mols of Hydrogen? . Review. How many moles are in 2.5 x 10 5 atoms of magnesium, Mg. Molar Mass. Molar mass is the weight in grams of one mole for any element or compound .

By jensen
(145 views)

Stoichiometry

Stoichiometry

Stoichiometry. Chapter 3 E-mail: benzene4president@gmail.com Web-site: http://clas.sa.ucsb.edu/staff/terri/. Stoichiometry - Ch. 3.

By xarles
(127 views)

Reminder: 1 mol of anything e.g. Oxygen, carbon, dollars, toys, etc. is 6.02 x 10 23

Reminder: 1 mol of anything e.g. Oxygen, carbon, dollars, toys, etc. is 6.02 x 10 23

Reminder: 1 mol of anything e.g. Oxygen, carbon, dollars, toys, etc. is 6.02 x 10 23. Let’s look at this pile of carbon in the form of charcoal. I bet you there is a bunch of carbon moles in there. Let’s see how much.

By woods
(65 views)

Chemistry 20 Mole Conversions

Chemistry 20 Mole Conversions

Chemistry 20 Mole Conversions. What is a Mole?. A term of measurement A counting number Similar to saying 1 dozen = 12 things Avogadro's Number (N A ) 6.02 x 10 23 items A VERY LARGE NUMBER!!!. = 1 mole.

By ardith
(260 views)

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