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Moles

Moles

Moles. Quantitative chemistry. Most chemical reactions involve two or more substances Substances react with each other in certain ratios The study of these ratios is called stoichiometry

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Chapter 3 Molecules, Compounds, and Chemical Equations

Chapter 3 Molecules, Compounds, and Chemical Equations

Chemistry: A Molecular Approach , 1 st Ed. Nivaldo Tro. Chapter 3 Molecules, Compounds, and Chemical Equations. Roy Kennedy Massachusetts Bay Community College Wellesley Hills, MA. 2008, Prentice Hall. Elements and Compounds.

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999 views • 73 slides
Elements and Compounds

Elements and Compounds

Elements and Compounds. elements combine together to make an almost limitless number of compounds the properties of the compound are totally different from the constituent elements. Chemical Bonds. compounds are made of atoms held together by chemical bonds

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1.59k views • 36 slides
Why is Knowledge of Composition Important?

Why is Knowledge of Composition Important?

Why is Knowledge of Composition Important?. Because everything in nature is either chemically or physically combined with other substances it is necessary to have knowledge of chemical composition. To know the amount of a material in a sample, you need to know what fraction of the sample it is.

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Finding Empirical Formulas

Finding Empirical Formulas

Unit 1-9 Chapter 3.5. Finding Empirical Formulas. Formulas. Empirical formula : the lowest whole number ratio of atoms in a compound. molecular formula = (empirical formula) n [ n = integer] molecular formula = C 6 H 6 = (CH) 6 empirical formula = CH.

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449 views • 28 slides
Why is Knowledge of Composition Important?

Why is Knowledge of Composition Important?

Why is Knowledge of Composition Important?. Because everything in nature is either chemically or physically combined with other substances it is necessary to have knowledge of chemical composition. To know the amount of a material in a sample, you need to know what fraction of the sample it is.

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288 views • 28 slides
Empirical and Molecular Formulas

Empirical and Molecular Formulas

Empirical and Molecular Formulas. Review. We learned how to calculate the molar mass of compounds. Calculate the molar mass of Ca(CN) 2 . 1 x Ca = 1 x 40.08 g/mol = 40.08 g/mol 2 x C = 2 x 12.01 g/mol = 24.02 g/mol 2 x N = 2 x 14.01 g/mol = 28.02 g/mol TOTAL = 92.12 g/mol. Review.

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371 views • 16 slides
Empirical and Molecular Formulas

Empirical and Molecular Formulas

Empirical and Molecular Formulas. Review. We learned how to calculate the molar mass of compounds. Calculate the molar mass of Ca(CN) 2 . 1 x Ca = 1 x 40.08 g/mol = 40.08 g/mol 2 x C = 2 x 12.01 g/mol = 24.02 g/mol 2 x N = 2 x 14.01 g/mol = 28.02 g/mol TOTAL = 92.12 g/mol. Review.

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165 views • 16 slides
Percent Composition

Percent Composition

Percent Composition. Chapter 10 Percent Composition and Chemical Formulas. OBJECTIVES: Describe how to calculate the percent by mass of an element in a compound. Chapter 10 - Percent Composition and Chemical Formulas. OBJECTIVES: Interpret an empirical formula.

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743 views • 13 slides
Percent Composition, Empirical and Molecular Formulas

Percent Composition, Empirical and Molecular Formulas

Percent Composition, Empirical and Molecular Formulas. Courtesy www.lab-initio.com. Calculating Percentage Composition. Calculate the percentage composition of magnesium carbonate, MgCO 3. Formula mass of magnesium carbonate: 24.31 g + 12.01 g + 3(16.00 g) = 84.32 g. 100.00. Formulas.

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261 views • 12 slides
Percent Composition, Empirical and Molecular Formulas

Percent Composition, Empirical and Molecular Formulas

Percent Composition, Empirical and Molecular Formulas. Courtesy www.lab-initio.com. Calculating Percentage Composition. Calculate the percentage composition of magnesium carbonate, MgCO 3. Formula mass of magnesium carbonate: 24.31 g + 12.01 g + 3(16.00 g) = 84.32 g. 100.00. Formulas.

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127 views • 12 slides
Empirical Formulas

Empirical Formulas

Empirical Formulas. Chapter 6, Section 3. What is an Empirical Formula?. Up to this point, we have been using molecular formulas to describe the chemical composition of compounds. A molecular formula is the actual formula of a compound

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98 views • 9 slides

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