Death By An Infant essays

Death By An Infant essays This story is actually a mix of about three terribly misguided kids that have committed a crime. The first story is about Derek King, 14, and his brother Alex, 13, that killed their father by beating him to death with a bat last November, in Florida. They received seven to eight years in prison. Next, Lionel Tate, 14, beat to death a six-year old and he got a life sentence. Then, the last story, Nathaniel Brazill, 14, got twenty-eight years for killing his middle-school teacher. The rest of the article continues in saying that possibly the cause of them doing this is a combination of bad genes and a bad environment. Right... I dont to an extent agree with the whole bad childhood to bad adulthood thing, but bad genes, no. Genes had nothing to do with killing someone else. Even if your great uncle killed someone doesnt not mean your going to do it too. I think that parents are just trying to find an excuse to blame all of the boys behavior on. What I also dont understand is why they didnt all receive the same punishment? They each killed someone, why would their punishments alter so greatly? I think that its absolutely terrible what these boys did. Even though they are teenagers, they may not have known that what they were going to do would result in death. What I mean is that I dont think that what they did was intentional, but still very severe. None of them should receive a life sentence, their just kids; they still have yet to finish learning right from wrong and common sense. The courts really should have considered this, and paid special attention to it. Im not saying that they shouldnt be punished, but they ought to have special circumstances. The kids should have gotten four years (until they turn eighteen) then they should have received therapy and probation, so that someone can help them and monitor them. It will help them to hopefully become stable adul...

Equivalence Point Definition

Equivalence Point Definition The equivalence point is a chemistry term youll encounter when you do a titration. However, it technically applies to any acid-base or neutralization reaction. Heres its definition and a look at methods used to identify it. Equivalence Point Definition The equivalence point is the point in a titration where the amount of titrant added is enough to completely neutralize the analyte solution. The moles of titrant (standard solution) equal the moles of the solution with unknown concentration. This is also known as the stoichiometric point because it is where the moles of acid are equal to the amount needed to neutralize the equivalent moles of base. Note this does not necessarily mean the acid to base ratio is 1:1. The ratio is determined by the balanced acid-base chemical equation. The equivalence point is not the same as the endpoint of a titration. The endpoint refers to the point at which an indicator changes color. More often than not, the color change occurs after the equivalence point has already been reached. Using the endpoint to calculate equivalence naturally introduces error. Key Takeaways: Equivalence Point The equivalence point or stoichiometric point is the point in a chemical reaction when there is exactly enough acid and base to neutralize the solution.In a titration, it is where the moles of titrant equal the moles of solution of unknown concentration. The acid to base ratio is not necessarily 1:1, but must be determined using the balanced chemical equation.Methods of determining the equivalence point include color change, pH change, formation of a precipitate, change in conductivity, or temperature change.In a titration, the equivalence point is not the same as the endpoint. Methods of Finding the Equivalence Point There are several different ways to identify the equivalence point of a titration: Color Change - Some reactions naturally change color at the equivalence point. This may be seen in redox titration, particularly involving transition metals, where the oxidation states have different colors. pH Indicator - A colored pH indicator may be used, which changes color according to pH. The indicator dye is added at the beginning of the titration. The color change at the endpoint is an approximation of the equivalence point. Precipitation - If an insoluble precipitate forms as a result of the reaction, it can be used to determine the equivalence point. For example, the silver cation and chloride anion react to form silver chloride, which is insoluble in water. However, it can be difficult to determine precipitation because the particle size, color, and sedimentation rate may make it difficult to see. Conductance - Ions affect the electrical conductivity of a solution, so when they react with each other, the conductivity changes. Conductance may be a difficult method to use, especially if other ions are present in the solution that can contribute to its conductivity. Conductance is used for some acid-base reactions. Isothermal Calorimetry - The equivalence point may be determined by measuring the amount of heat that is produced or absorbed using a device called an isothermal titration calorimeter. This method is often used in titrations involving biochemical reactions, such as enzyme binding. Spectroscopy: Spectroscopy can be used to find the equivalence point if the spectrum of the reactant, product, or titrant is known. This method is used to detect etching of semiconductors. Thermometric Titrimetry: In thermometric titrimetry, the equivalence point is determined by measuring the rate of temperature change produced by a chemical reaction. In this case, the inflection point indicates the equivalence point of an exothermic or endothermic reaction. Amperometry: In an ampometric titration, the equivalence point is seen as a change in the measured current. Amperometry is used when the excess titrant is able to be reduced. The method is useful, for example, when titrating a halide with Ag because it isnt affected by precipitate formation. Sources Khopkar, S.M. (1998). Basic Concepts of Analytical Chemistry (2nd ed.). New Age International. pp. 63–76. ISBN 81-224-1159-2.Patnaik, P. (2004). Deans Analytical Chemistry Handbook (2nd ed.). McGraw-Hill Prof Med/Tech. pp. 2.11–2.16. ISBN 0-07-141060-0.Skoog, D.A.; West, D.M.; Holler, F.J. (2000). Analytical Chemistry: An Introduction, 7th ed. Emily Barrosse. pp. 265–305. ISBN 0-03-020293-0.Spellman, F.R. (2009). Handbook of Water and Wastewater Treatment Plant Operations (2 ed.). CRC Press. p. 545. ISBN 1-4200-7530-6.Vogel, A.I.; J. Mendham (2000). Vogels Textbook of Quantitative Chemical Analysis (6th ed.). Prentice Hall. p. 423. ISBN 0-582-22628-7.