Ratios

Concentration ratio

In economics, concentration ratios are used to quantify market concentration and are based on companies' market shares in a given industry. Market share can be defined as a firm's proportion of total sales in an industry, a firm's market capitalisation as a percentage of total industry market capitalisation or any other metric which conveys the size and dominance of a company relative to its competitors. A concentration ratio (CR) is the sum of the percentage market shares of (a pre-specified number of) the largest firms in an industry. An n-firm concentration ratio is a common measure of market structure and shows the combined market share of the n largest firms in the market. For example, where n = 5, CR5 defines the combined market share of the five largest firms in an industry. Competition economists and competition authorities typically employ concentration ratios (CRn) and the Herfindahl-Hirschman Index (HHI) as measures of market concentration. The concentration of firms in an industry is of interest to economists, business strategists and government agencies. (Wikipedia).

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Concentration

Senior Chemistry lesson on calculation concentration of solutions

From playlist Chemistry

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Ratios

This video defines a ratio and provides several examples on how to write a ratio and shows how to simplify a ratio. http://mathispower4u.wordpress.com/

From playlist Ratios and Rates

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16 Equilibrium Constants

Senior Chemistry lesson on reaction kinetics and what the equilibrium constant represents and how to calculate.

From playlist Chemistry

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Chemistry - Solutions (6 of 53) Expressing Concentrations: Example 2

Visit http://ilectureonline.com for more math and science lectures! In this video I will find the mass of a prepare 3 liter of a 2% (W/V) saline solution.

From playlist CHEMISTRY 19 SOLUTIONS

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System of 3 Equations with 3 Unknowns Application - Concentration Problem

This video provides an example of an application problem using a system of three equations with three unknowns. Site: http://mathispower4u.com

From playlist Systems of Equations with Three Unknowns

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Chemistry - Concentration (Molarity) in Chemical Equations (25 of 38) : Definition

Visit http://ilectureonline.com for more math and science lectures! In this video I will show you how to calculate the definition of the concentration (molarity) of a solution.

From playlist CHEMISTRY 7 CONCENTRATION, REACTANTS, PRODUCTS

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Proportions

This video defines a proportion and explains how to solve a proportion. http://mathispower4u.wordpress.com/

From playlist Proportions

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Chemistry - Acids & Bases Fundamentals (9 of 35) Calculating the pH: Ex 1

Visit http://ilectureonline.com for more math and science lectures! In this video I will calculate the pH given the concentration of H+.

From playlist CHEMISTRY 22 ACIDS AND BASES

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Chemistry - Acids & Bases (30 of 45) Comparing Acid Strengths Using % Concentrations

Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the % ionized of a strong, weak, weaker, and very weak acid.

From playlist CHEMISTRY 22 ACIDS AND BASES

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Chemistry - Chemical Kinetics (11 of 30) Finding the Order - Using Initial Rates

Visit http://ilectureonline.com for more math and science lectures! In this video I will find the order using initial rates of multiple reactants.

From playlist CHEMISTRY 21 CHEMICAL KINETICS

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IB The Equilibrium Law

IB HL Chemistry Lesson on equilibrium law and how can be applied to finding unknown concentrations.

From playlist IB Chemistry

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Comparing drink concentrate

We comparing different drink mixes using ratios

From playlist Middle School - Worked Examples

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Ksp - Molar Solubility, Ice Tables, & Common Ion Effect

This chemistry video tutorial provides a basic introduction into Ksp - the solublity product constant. It explains how to calculate molar solubility from Ksp in mol/L and g/L and vice versa. It also explains how to solve common ion effect problems. Get The Full 1 Hour 26 Minute Video on

From playlist New AP & General Chemistry Video Playlist

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General Chemistry 1C. Lecture 10. Buffered Solutions (Buffers) Pt. 1.

UCI Chem 1C General Chemistry (Spring 2013) Lec 10. General Chemistry -- Buffered Solutions (Buffers) -- Part 1 View the complete course: http://ocw.uci.edu/courses/chem_1c_general_chemistry.html Instructor: Ramesh D. Arasasingham, Ph.D. License: Creative Commons BY-NC-SA Terms of Use: ht

From playlist Chemistry 1C: General Chemistry

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Chemistry - Chemical Kinetics (15 of 30) Finding Rate Law & Rate Constant, k

Visit http://ilectureonline.com for more math and science lectures! In this video I will determine the rate law and the rate constant, k.

From playlist CHEMISTRY 21 CHEMICAL KINETICS

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Chemistry - Chemical Kinetics (5 of 30) Reaction Rate- Rate Law

Visit http://ilectureonline.com for more math and science lectures! In this video I will explain rate laws using the example N2O5,NO2, and O2.

From playlist CHEMISTRY 21 CHEMICAL KINETICS

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General Chemistry 1C. Lecture 09. Acids and Bases. Pt. 6.

UCI Chem 1C General Chemistry (Spring 2013) Lec 09. General Chemistry -- Acids and Base -- Part 6 View the complete course: http://ocw.uci.edu/courses/chem_1c_general_chemistry.html Instructor: Ramesh D. Arasasingham, Ph.D. License: Creative Commons BY-NC-SA Terms of Use: http://ocw.uci.e

From playlist Chemistry 1C: General Chemistry

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Rational Function Application - Concentration of a Mixture

This video explains how to write a rational function that gives the concentration of a mixture and than determine concentrations.

From playlist Determining Equations of Rational Functions

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Chemistry - Solutions (8 of 53) Expressing Concentrations: Molarity: Example 1

Visit http://ilectureonline.com for more math and science lectures! In this video I will take a closer look at the effect of polarity on solubility.

From playlist CHEMISTRY 19 SOLUTIONS

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ABR#16 Describing Acid Base Solutions

HSC Chemistry Acid/Base Reactions Describing Acid/Base Reactions Strength vs Concentration

From playlist Y12 Chem Mod 6 Acid/Base

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