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Empirical formula

determination of the empirical formula of magnesium oxide

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Empirical formula

Determination of the Empirical Formula of Magnesium Oxide GOAL AND OVERVIEW The quantitative stoichiometric relationships governing mass and amount will be studied using the combustion reaction of magnesium metal. Magnesium is reacted with oxygen from the air in a crucible, and the masses before and after the oxidation are measured. The resulting masses are used to calculate the experimental empirical formula of magnesium oxide, which is then compared to the theoretical empirical formula. A crucible and Bunsen burner will be used to heat magnesium metal to burning. Objectives of the Data Analysis: ? Determine the expected formula for the ionic oxide expected when Mg reacts with O2 ? Find the theoretical and actual yields of MgxOy

Chemistry 101 exam 1 key

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C10H14N2O3
C10H16N2O3

Chemistry 101 - Exam I Name _____________________ 27 September 2017 Show all work for credit. State any assumptions made to solve a problem. Give all numerical answers with the correct number of significant figures. All answers in scientific notation must be in correct scientific notation (i.e., 6.022?1023 not 6.022E23 or 6.022e23). All instances of incorrect scientific notation will result in the loss of 3 points each. All numbers that require units should have the units written. All instances of numbers without units will result in the loss of 3 points each. 1. (24 pts) Name the following organic compounds: a. O O propyl 4,4-dimethylheptanoate b. OH 2,5-dimethylphenol c. I 5-iodo-4-methyloct-2-ene

Chemistry The Central Science Chapter 3

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Limiting reagent

Chapter 3 Chemical Reactions and Reaction Stoichiometry James F. Kirby Quinnipiac University Hamden, CT Lecture Presentation ? 2015 Pearson Education, Inc. Stoichiometry The study of the mass relationships in chemistry Based on the Law of Conservation of Mass (Antoine Lavoisier, 1789) ?We may lay it down as an incontestable axiom that, in all the operations of art and nature, nothing is created; an equal amount of matter exists both before and after the experiment. Upon this principle, the whole art of performing chemical experiments depends.? ?Antoine Lavoisier ? 2015 Pearson Education, Inc. Chemical Equations Chemical equations are concise representations of chemical reactions. Stoichiometry ? 2015 Pearson Education, Inc. 3 What Is in a Chemical Equation?

Compound Naming and Molecular and Empirical Formulas

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Compound Naming Ionic: ends in ?ide NaCl -binary compound (two element) - a ratioempirical formula - sodium chlorineide Metals: use roman numbers to indicate charge What happens when you are naming metals? -Metals can take on a number of charges, and thus don?t have a set charge. For example: Cr+3Cl3- and Cr+2Cl2 both would be called ?chromium chloride? if we use the above rule. Thus, we resort to using roman numerals to denote charge. Cr+2Cl2 is now known as chromium III chloride Cr+3Cl3- is now known as chromium II chloride. Molecular: denote subscripts make sure the molecule doesn?t consist of ionic or metallic bonds CO carbon MONoxide CO2 carbon DIoxide P2S5 DIphosphorus PENTsulfide NOTE: put cations (positive) first Emperical Formula: reduce the numbers C1H2O1=CH2O

Compound Naming and Molecular and Empirical Formulas

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Compound Naming Ionic: ends in ?ide NaCl -binary compound (two element) - a ratioempirical formula - sodium chlorineide Metals: use roman numbers to indicate charge What happens when you are naming metals? -Metals can take on a number of charges, and thus don?t have a set charge. For example: Cr+3Cl3- and Cr+2Cl2 both would be called ?chromium chloride? if we use the above rule. Thus, we resort to using roman numerals to denote charge. Cr+2Cl2 is now known as chromium III chloride Cr+3Cl3- is now known as chromium II chloride. Molecular: denote subscripts make sure the molecule doesn?t consist of ionic or metallic bonds CO carbon MONoxide CO2 carbon DIoxide P2S5 DIphosphorus PENTsulfide NOTE: put cations (positive) first Emperical Formula: reduce the numbers C1H2O1=CH2O

Compound Naming and Molecular and Empirical Formulas

Subject: 
Chemistry
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Human–computer interaction
Information Age
World Wide Web
Empirical formula
CNote
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Humanities
Animation
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naming

Compound Naming Ionic: ends in ?ide NaCl -binary compound (two element) - a ratioempirical formula - sodium chlorineide Metals: use roman numbers to indicate charge What happens when you are naming metals? -Metals can take on a number of charges, and thus don?t have a set charge. For example: Cr+3Cl3- and Cr+2Cl2 both would be called ?chromium chloride? if we use the above rule. Thus, we resort to using roman numerals to denote charge. Cr+2Cl2 is now known as chromium III chloride Cr+3Cl3- is now known as chromium II chloride. Molecular: denote subscripts make sure the molecule doesn?t consist of ionic or metallic bonds CO carbon MONoxide CO2 carbon DIoxide P2S5 DIphosphorus PENTsulfide NOTE: put cations (positive) first Emperical Formula: reduce the numbers C1H2O1=CH2O
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