Chemistry of cosmetics Few people would whip out a chemistry set‚ uncork the vials‚ and slap the compounds on their face. Yet‚ millions of women and girls essentially do that every day when they unzip their makeup bags and apply lipstick‚ mascara‚ and other makeup. Like the compounds in a chemistry set‚ makeup consists of chemicals. Although the chemicals in cosmetic products are intended to improve the appearance of skin‚ lips‚ and lashes‚ some can cause adverse effects. Emulsions The majority
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Assignment 03 Part 1 Stalin What does this source tell us about the creation of myth surrounding Stalin? Krushchev on Stalin He argues that under Lenin was a “collectable leadership” with which they discussed political strategy. Stalin was power-hungry who repressed those who would stand up for their opinion‚ he didn’t listen to the people and attacked those who supported him. Using the idea of “Enemy of the people” to justify his actions. “It is clear that here Stalin showed
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ELECTROLYSIS IN OUR DAILY LIFE “Electrolysis is the passage of an electric current through an electric current through an electrolyte with subsequent migration of positively and negatively charged ions to the negative and positive electrodes. “ 1 Electrodes are metals that are capable to conduct electricity through the solution used in electrolysis. During electrolysis‚ positive and negative electrodes are needed. The positive electrode (anode) experiences oxidation (loses electrons and
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1. Iron undergoes an interesting journey as it travels through the human digestive tract. Discuss the processes that occur in the stomach (pH 2) and the intestines (pH 8) and the pH dependence of each process. Foods that we consume contain Iron in the ferric (Fe3+ ) form. Ferric form is not usually absorbed in the body. In the stomach‚ there is low pH of 2 due to presence of gastric acids such as Hydrochloric and Ascorbic acids. These acids provide an acidic environment for reduction of ferric iron
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facility planning part ! Facility Planning‚ Part I Maria Cordero HCS/446 October 23‚ 2012 Johnnie West Introduction This paper provides an overview of the facility planning process for the Urgent Care Clinic. The Urgent Care Clinic is considered a family clinic that is located in Virginia. In this paper the author will discuss the following elements. The communities need for the clinics renovation. The current type of population that is in need of health care services. And a brief description
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Explain the effects of the Purges? Introduction The Great Purge was a campaign of political repression in the Soviet Union orchestrated by Joseph Stalin from 1934 to 1939. It involved a large-scale purge of the Communist Party and government officials‚ repression of peasants and the Red Army leadership‚ and widespread police surveillance‚ suspicion of "saboteurs"‚ imprisonment‚ and arbitrary executions. 1st Para Scientists‚ Doctors and Engineers‚ were heavily targeted‚ imprisoned and killed.
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Chemistry in the Movies Assignment (25 Points Extra Credit) This project will explore the public perception of chemistry. Each participating student will analyze a movie. Movies may be selected from the list on the following page or the student may find analyze any other academically acceptable movie with a chemist or chemical theme. All reviews will use academically acceptable language‚ spelling‚ and grammar and be 400 words minimum. For each movie‚ the student
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The Titration of a Basic Solution of Unknown Molarity with a Standard Hydrochloric Acid Solution Abstract The aim of the experiment was how to determine the molarity of a solution. My hypothesis was if I have to determine the molarity of a NaOH solution‚ then I would have to use a standard solution of HCl solution because I would need to neutralize each other to determine the concentration of the solution of NaOH. The method that I used for this experiment was titration. Titration helped
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heading is included and your answers are correctly numbered. The assignment must have a completed cover sheet. It must be placed in the drop-box on or before the deadline. st SECTION A ELECTRONIC STRUCTURE & IONIZATION ENERGY 1. 2. Write the electronic structure in s‚p‚d notation of the following: O‚ Na‚ Na+‚ Al‚ Cl- and Co (Total 6 Marks) Write the electronic configuration in box notation of the following: N‚ Si and Ni (Total 3 Marks) 3. Write the electronic
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EXPERIMENT 2 ACID DISSOCIATION CONSTANT OF AN INDICATOR DYE OBJECTIVES Using spectrophotometric method: determine the wavelengths at which the acid and base forms of the dye in aqueous medium exhibit maximum absorption; determine the molar absorptivities of the acid and base forms of the dye and estimate an unknown concentration of the dye in solution using the Beer-Lambert’s Law; and determine the acid dissociation constant of the indicator dye. THEORY The absorption or reflection of
Free PH Acid dissociation constant