CHAPTER 1 Introduction Background of the Study Like many other hygiene convenience‚ shoe polish or can also be called boot polish is usually a wax ‚ cream or paste used by people to shine‚ water proof and restore the appearance of leather shoes. This extends the footwear’s life. This is made up of many kinds of chemicals and because of this; it can cause irritations‚ allergies to us. In our generation‚ shoe polish is used every day and companies produce a lot of it to meet the demands of
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its applicability to the separation of many different kinds of mixtures. Column chromatography rapidly found application in all areas of chemistry and is used extensively today because it is a simple but powerful tool for the separation of pure compounds from a complex mixture. It cannot affect the same degree of separation as TLC‚ but its advantage over TLC is the fact that large amounts of mixtures (over 5 g) can easily be treated by this method. There are‚ however‚ a number of important similarities
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Naming Chemical Compounds General Information: Scientists all around the globe use a standard method for naming chemical compounds. The standards were set up by an international committee sponsored by the International Union of Pure and Applied Chemistry (IUPAC). Having this standard makes life easier for people who use these compounds everyday. It would be tough to set up any experiment if scientists everywhere used different names for the same compound. It would also make the lab a
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The Branch Davidian Compound was established as living-worship center for the members of the sect to reside. The residents of the compound lived‚ worked‚ learned‚ and worshipped in the isolated community. Because of the nature of the isolation and basis of the belief system of the Branch Davidian church created a unique way of life for the residents. Life in the compound was mostly dictated by David Koresh because he was a self-proclaimed messiah (equip.org) in which the members followed. Because
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Lately‚ the transgender community’s push for more gender-neutral public bathrooms has drawn a fair amount of attention‚ support‚ and criticism. I identify as pansexual and I personally do not have any gender preferences. I’ve been supporting LGBT since I had an understanding of the term. There was a time I cut my hair very short and dressed more masculine than feminine. I used to get weird looks when I went to female bathrooms in public places like grocery stores and malls; therefore I had the experience
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Name Class Date [pic] Compound Inequalities 3-6 Reteaching A compound inequality with the word or means one or both inequalities must be true. The graph of the compound inequality a < –4 or a ≥ 3 is shown below. [pic] A compound inequality with the word and means both inequalities must be true. The graph of the compound inequality b ≤ 4 and b > –1 is shown below. [pic] To solve a compound inequality‚ solve the simple inequalities from which it is made. [pic] Problem
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on a currency-neutral basis Net income attributable to shareholders up 25% to € 209 million adidas Group increases full year sales guidance • Comparable Retail store sales grow 17% currency-neutral • adidas and Reebok sales increase 18% and 24% respectively • Gross margin almost unchanged at 48.5% despite higher input costs • Operating margin up on a comparable basis • Net borrowings down 33% to € 914 million at quarter-end adidas Group currency-neutral sales increase
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Nomenclature for Ionic Compounds Ionic compounds consist of cations (positive ions) and anions (negative ions). The nomenclature‚ or naming‚ of ionic compounds is based on the names of the component ions. Here are the principal naming conventions for ionic compounds‚ along with examples to show how they are used: Roman NumeralsA Roman numeral in parentheses‚ followed by the name of the element‚ is used for elements that can form more than one positive ion. This is usually seen with metals. You
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EMISSIONS FROM ADIPIC ACID AND NITRIC ACID PRODUCTION A C K N O WL E D G E M E N T S This paper was written by Heike Mainhardt (ICF Incorporated) and reviewed by Dina Kruger (USEPA). ABSTRACT Nitrous oxide (N2O) is generated as a by-product during the production of adipic acid and nitric acid. The main use for adipic acid is as a component of nylon-6/6; thus production trends are closely correlated with nylon consumption trends. Worldwide‚ there are very few adipic acid plants. The U.S. is
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Extraction: Extraction with acid and alkali Objective 1. To recover the benzoic acid and p-dichlorobenzene from its mixture from its mixture by using acid-alkali extraction. 2. To determine the percentage recovery and melting point of the recovered benzoic acid and p-dichlorobenzene. Introduction Acid-base extraction is a process which purifying the acids and bases from mixtures based on their chemical properties. Acid-base extraction is performed to isolate the compounds and natural products from
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