Many substances that we use on a daily basis are in fact part of a mixture. A scientist separated a mixture to obtain the specific substance that was in need. Many of the compounds and mixtures today are not found in its pure form‚ but in mixtures. Many scientists have the impression that separating mixtures is an important part of chemistry and modern academics. How can the components of mixture be separated and analyzed? Background Information: All elements and compounds are pure substances and
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For my project‚ I had to create my own acid-base indicator and find out what happens when it is placed in an acidic solution (vinegar) and a basic solution (dissolved baking soda). I chose my indicator to be a fruit because fruits can be very effective at determining how acidic or basic a substance is. My fruit was a blueberry‚ but I couldn’t use raw blueberries because it’s not going to give me the best results. I had to make blueberry juice. I did this by placing several blueberries in a blender
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Acid-Base Titrations A Titration of Potassium Hydroxide Phthalate and Sodium Hydroxide Hanna Piper Department of Chemistry‚ SUNY College at Brockport‚ Brockport‚ NY 14420 Chemistry 205.06 Abstract Titrations are used to find the molarity of an unknown solution. A titration begins with an analyte and titrant being used to measure the unknown molarity of the analyte. In the following experiment‚ sodium hydroxide was used as the titrant and potassium hydroxide phthalate was used as the
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Our Lady of Fatima University Valenzuela City Partial Fulfillment of Requirements in Practicum in School Setting Ψ 19C “Case Study of an Individual with Substance Abuse Disorder” Submitted to: Mr. John Jamir Benzon R. Aruta Submitted by: Andagan‚ Joseph I‚ 2009-108233 SUBSTANCE – USE DISORDER CLINICAL HISTORY Miguel’s symptoms of alcohol dependence started at the same time he learned how to smoke. At the tender age of 14‚ Miguel started engaging in drinking alcohol
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Experiment 1: What Household Substances are Acidic or Basic? Table 1: pH values of common household substances Substance | pH Guess | pH Paper | Vinegar | 5 | 3 | Sodium bicarbonate solution | 6 | 8 | Lemon juice | 4 | 2-3 | Vegetable oil | 8 | 4 | Bottle water | 7 | 7 | Hot sauce | 5 | 3 | Questions 1. Compare and contrast acids and bases in terms of their H+ ion and OH- ion concentrations. An acid produces hydronium ions by donating a proton H+ to water. Base
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Bioresource Technology 79 (2001) 207±225 Review paper The production of poly-(c-glutamic acid) from microorganisms and its various applications Ing-Lung Shih *‚ Yi-Tsong Van Department of Environmental Engineering‚ Da-Yeh University‚ 112 Shan-Jiau Road‚ Da-Tsuen‚ Chang-Hwa 51505‚ Taiwan‚ ROC Accepted 9 April 2001 Abstract This review article deals with the chemistry and biosynthesis of poly-(c-glutamic acid) (c-PGA) produced by various strains of Bacillus. Potential applications of c-PGA as
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Who’s Afraid of Gender-Neutral Bathrooms? “Today‚ men and women‚ not assumed only to be heterosexual‚ are expected to function at work alongside one another‚ eat at adjacent seats in restaurants‚ sit cheek by jowl in buses and airplanes‚ take classes‚ study in libraries‚ and‚ with some expectations‚ even pray together. Why is the multi-stall bathroom the last vestige of gendered social separation” (Gersen 7)? As many of us know‚ men and women are constantly being compared in our society‚ based on
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PRINCIPLES OF CHEMISTRY LAB I Experiment 2 Separation Of Mixtures INTRODUCTION A mixture can simply be defined as a substance that is made up or consists of two or more elements and/or compounds that are physically combined but that have not reacted chemically to form new substances. A mixture may be a solid‚ liquid‚ gas‚ or some combination of those states. Mixtures can be found almost every wher in our everyday lifes and some common examples are * sand and water * salt and water
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Tittle: Separation of leaves pigment. Introduction The photosynthetic pigment is used to absorb light during the process of photosynthesis. There are five pigments usually found in spinach leaves: Carotene (yellow)‚ Phaeophytin (yellow-grey)‚ Xanthophyll (yellow-brown)‚ Chlorophyll a (blue-green)‚ Chlorophyll b(green). Photosynthetic pigment is located in the chloroplast of the leaf. The function of chlorophyll a and chlorophyll b is to trap red and blue violet light when they carry out photosynthesis
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Acid Rain Acid rain is polluted rain. The pollutants go up to the atmosphere and when it rains it brings the pollution down with it. Sulfur dioxide and nitrogen oxide are the gases that form the acid rain. When these gases mix with moisture it can make rain‚ snow‚ hail‚ or even fog. The scientific term for acid rain is acid deposition which means when the acid is taken from the air and is deposited on the earth. Major industries‚ coal burning factories‚ power plants and automoble engines
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