Chemicals of Life • With the exception of water‚ virtually all chemicals of life are CARBON based • Molecules that contain Carbon are considered organic with some exceptions such as CO2 • Carbon has 4 valence electrons so it is oriented in a tetrahedron shape Sketch→ • Carbon can form up to 4 covalent bonds and can form long chains‚ rings‚ and branched chain molecules • Carbon acts as the backbone of biological molecules • Molecules that only contain carbon and hydrogen are known as hydrocarbons→
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Chemical Reactions & Equations CHEMICAL REACTION : In a reaction when the original state of the particle changes and it cannot be reversed by simple physical means‚ this type of reaction is known as chemical reaction. Example :- Fermentation of grapes‚ burning of wood etc. In this reaction we have seen that after burning of wood‚ coal is formed and we cannot make wood from coal. PHYSICAL REACTION : In a reaction when original state of the particle can be recovered by any means then this type of
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Water Transport in Plants Introduction In this lab experiment‚ we set out to examine the different transpiration rates of a plant system in certain environments. Water is transported in a plant by the process of transpiration‚ which is the loss of water through evaporation from the surface of leaves. The stomata in leaves are responsible for the diffusion of water vapor. Transpiration brings water upward through the xylem in the plant. There are certain factors that can affect transpiration
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Chemical Equilibrium: Le Chatelier Principle By Sarah Ramos and Kristina Todorovic Chemistry 203 DEN Dr. Mohamed El-Maazawi Part A. Acid-Base Indicators Purpose In this part of the experiment‚ we will find a reagent that will shift the acid-base equilibrium reaction described by Equation (2) in one direction and then a second reagent that will cause the equilibrium position to shift back in the opposite direction. Introduction An acid–base indicator
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also cause a concern when it comes to consumers. Those hard-to-pronounce chemicals that are in the list of ingredients on the label are used for more than just flavoring‚ appearance‚ and preserving the food (Food Additives). Those additives are used in some other very harsh items such as bug repellent (Food Additives). However‚ there are some simple and sustainable options that can help consumers avoid running into harsh chemicals and additives that may be lurking in their food. These changes will not
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Victoria Kids Fashions feature the type of clothes mothers generally don’t want to part with. Elegantly designed with exclusive details such as embroidery‚ tulle overlay‚ ruffles and lace‚ the collection of Victoria Kids Fashions are the perfect choice for portrait sitting and other special occasions. Whether you are looking for a holiday dress‚ dress for a religious ceremony or other special event‚ the collection of dresses and accessories from Victoria Kids Fashions are certain to offer options
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Chemical Castration LaDarius D. Abraham Southern University A&M College Sex offenders have been a serious problem for our legal system at all levels‚ not to mention those who have been their victims. Sadly‚ many of those assaults are perpetrated by people who have already been through the correctional system only to victimize again. Sex offenders‚ as a class of criminals‚ are nine times more likely to repeat their crimes (Oakes 99). This presents a problem for the public‚ as potential victims
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Verifiable Goals Questions & Answers Q1.Can a division manager develope verifiable goals‚ or objective‚ when they have not been assigned to him or her by the president? How? What kind of information or help do you believe is important for the division manager to have from headquarters? ANS 1. Yes‚ I think a division manager can develop verifiable goals‚ or objective‚ when they have not been assigned to him or her by the president. It seems that the division manager has exercised management by objectives
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Transport Processes (SKKK 2313) ASSIGNMENT # 1 1. Consider a steam pipe of length L=20 m‚ inner radius r1=6 cm‚ outside radius r2=8 cm‚ and thermal conductivity k=20 W/m.k. The inner and outer surfaces of the pipe are maintained at average temperatures of T1=150oC and T2=60oC‚ respectively. Obtain a general relation for the temperature distribution inside the pipe under steady conditions‚ and determine the rate of heat loss from the steam through the pipe. Assume that heat transfer is one-dimensional
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Chemical Periodicity Gorospe‚ Jheremy Alden B. ____________________________________________________________________________________ ABSTRACT The experiment Chemical Periodicity was demonstrated by using different samples of Group IA‚ Group IIA and Group IVA elements. We placed each of the samples in each test tubes and the physical state‚ color‚ and appearance was identified. We determined the solubility of the elements by using distilled water. We used red and blue litmus paper for the Group
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