'Mol h' presentation slideshows

Chapter 8 Chemical Bonding and Molecular Structure

Chapter 8 Chemical Bonding and Molecular Structure. WHAT IS A BOND?. Bonds are attractive forces that hold groups of atoms together and make them function as a unit.

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Quick Review: The Mole A very large counting number = 6.022 x 10 23 (6.022 followed by 23 zeros)

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Autoionization of Water

Autoionization of Water. Although water is a molecular substance, very low concentrations of hydronium ions and hydroxides ions are formed by autoionization. Autoinization. 2 H 2 O (l) H 3 O + (aq) + OH - (aq). Autoionization of Water. Autoionization:

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Autoionization of Water

Autoionization of Water. Although water is a molecular substance, very low concentrations of hydronium ions and hydroxides ions are formed by autoionization. Autoinization. 2 H 2 O (l) H 3 O + (aq) + OH - (aq). Autoionization of Water. Autoionization:

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ACIDS AND BASES

ACIDS AND BASES. CHAPTER 15. I. Arrhenius Acids and Bases. (What we have been using to this point) Arrhenius Acid is a substance that, when dissolved in water, increases the concentration of hydrogen ion, H + or ( hydronium ion H 3 O + ).

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Ch. 3 Stoichiometry

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Section 4: Empirical and Molecular Formulas

Section 4: Empirical and Molecular Formulas. Chemical Composition. Learning Goals. Explain what is meant by the percent composition of a compound. Determine the empirical and molecular formulas for a compound from mass percent and actual mass data. Percent Composition.

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CH3 Mass Relationships in Chemical Reactions

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Bell Ringer

Bell Ringer. Which of the following aqueous solutions will cause litmus paper to turn red? A NaOH B NaCl C HCl D H 2 O. pH. 1-6. 7. 8-14. Solution Added. Acid. Neutral. Base. Litmus paper changes from. Blue to Red. Does not Change. Red to Blue. Source: 2003 VA EOC Exam.

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Empirical formula:

Empirical formula:. Hydroquinone, used as a photographic developer is 65.4% C, 5.5% H, and 29.1% O, by mass. What is the empirical formula?. If we work with 100 grams, we would have 65.4 g C, 5.5 g H and 29.1 g O. Then: Change g to moles and convert to whole numbers. 65.4 g. = 5.42 mol C.

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By, Rachel Smith and Matt Rose

Chapter 3: Stoichiometry. By, Rachel Smith and Matt Rose. Basics. It is used to find the quantities of materials consumed and produced in chemical reactions Average mass: total mass/amount

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Chap 12

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Civil Rights Act Signed into Law ( 1964)

Civil Rights Act Signed into Law ( 1964). HW 8: DUE Monday 7/7/14 ( only assignment from this chapter) Chap. 8, #'s 5, 11, 19-27 odd, 33, 35, 37, 39,55-61 odd, 77, 79, 81, 85, 92, 117, 121, 122, 123 Lab Tomorrow (WET LAB!) No prelab Exam 2 on Thursday

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Percent Composition & Chemical Formulas (empirical to molecular) Chapter 10.3

Percent Composition & Chemical Formulas (empirical to molecular) Chapter 10.3. Percent Composition . The percent by mass of each element in the compound. How to find Percent Composition. Percent composition can be determined in 2 ways. Determined using formulas

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Empirical (or simplest) Formula

Empirical (or simplest) Formula. What does empirical mean? Determined by experiment. What is the simplest whole number ratio of C : H in benzene, C 6 H 6 ? 1 : 1 What is the simplest whole number ratio of C : H in acetylene, C 2 H 2 ? 1 : 1

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Molecular Formula

Molecular Formula. Percent Composition ? Empirical Formula. The percent composition of fuel is 81.7% carbon and 18.3% hydrogen. What is the empirical formula of the fuel? Start by assuming 100 g of the compound (81.7 g) / (12.01 g/mol) = 6.80 mol C (18.3 g) / (1.008 g/mol) = 18.2 mol H.

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DISTILLATION PROBLEMS using McCabe-Thiele Method

DISTILLATION PROBLEMS using McCabe-Thiele Method. Answer D = 85.3 mol/h, W=114.7 mol/h, R m =1.70 (c) 6.2 theoretical plates + reboiler (d) 11.0 theoretical plates + reboiler ; (For saturated feed, refer answer in Problem 11.4-2).

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Amedeo Avogadro

Amedeo Avogadro. In order to state that equal volumes of all gases at the same temperature and pressure contain the same number of molecules, Amedeo Avogadro used the ideas of Gay-Lussac in the year 1811. Avogadro's Principle.

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2/1 or 2/4 Warm-up

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