Introduction Butter is a dairy product made by churning of cream‚ mostly from fresh cow’s milk‚ with the additional of salt (Bylund‚ 1995). Salt (Sodium Chloride) is used as flavoring and preservative as it inhibit the microbial growth. Salt content in butter is limited by legislation in some countries. For example‚ in Thailand‚ the maximum sodium chloride content in butter shall not exceed 4 percent of total butter weight (Thai Ministry of Public Health‚ 2001). Therefore‚ analytical methods are
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Investigating the Ratio Between Poly-Vinyl Alcohol and Sodium Borate to form a Bouncing Ball Timothy English Gen. Chem. 1 Lab Section: 009 Introduction: Poly-Vinyl Alcohol (PVA) is a water-soluble synthetic polymer that will be used as one element to form the well know bouncing ball‚ along with Sodium Borate (borax)‚ which has a variety of uses because of its weak base. PVA is ideal for this experiment because it is odorless‚ nontoxic‚ has high tensile strength and flexibility. The
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SPE 167543 Wellbore Stability Management In Depleted And Low Pressure Reservoirs Fekete Paul O.‚ Dosunmu Adewale‚ Anthony Kuerunwa‚ Ekeinde Evelyn B.‚ Anyanwu Chimaroke‚ and Odagme Baridor S.‚ Dept. of Petroleum and Gas Engineering‚ University of Port Harcourt‚ Nigeria Copyright 2013‚ Society of Petroleum Engineers This paper was prepared for presentation at the Nigeria Annual International Conference and Exhibition held in Lagos‚ Nigeria‚ 30 July–1 August 2013. This paper was selected for presentation
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General Chemistry Laboratory 151 Chemiluminescence Introduction: The objective of tis experiment was to carry out systematic series of experiments in order to determine which chemicals and which ratios of chemicals produce the brightest light. Also‚ this experiment will determine which chemical produces the longest light. Chemiluminescence is the emission of light (luminescence)‚ as the result of a chemical reaction. There may also be limited emission of heat. This occurs because the
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of the experiment is to find out the amount of calcium carbonate in toothpaste through back titration since calcium carbonate does not dissolve in water. A roughly weighed amount of calcium carbonate is mixed with hydrochloric acid and then titrated against sodium hydroxide. When the indicator turns from pink to orange‚ the volume of sodium hydroxide used is taken down. After doing some calculations‚ the average percentage of calcium carbonate in toothpaste is 19.2%. This average percentage is relatively
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Lab: 5 Experiment:13 Pre-Lab The purpose of this experiment is to observe an equilibrium reaction counteracting changes to it’s system all in accordance to Le Chatelier’s principle. An equilibrium reaction can be pushed toward products or reactant based on changes in temperature or concentration. The reversibility of reaction will also be looked at. Pre-Lab questions 1. The concentrations of products and concentrations of reactants remain constant but both reactions
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rock‚ a form of sedimentary rock composed of mineral calcite. It forms under reasonably deep marine conditions from the gradual accumulation of minute calcite plates shed belonging to the division of haptophytes. They function as a special calcium carbonate. In this investigatory project‚ we study the effectiveness of eggshells as an alternative ingredient in chalk production. The study is very efficient in these days because many people are in need of chalk. The components of chalk are so complex that
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:ABSTRACT The researcher conduct this study due to economics crisis nowadays. It’s aim to create a product of chalkwhich is cheaper and could give the same quality which the commercial one could give through eggshells. This steps was made by the researcher to make a chalk out of eggshells;First she clean the empty eggshell of the chicken through washing‚then when the eggshells is already dry‚ she pound the clean eggshells very well until it will become a powder‚then she get the residue and she separate
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Experiment 3: Stoichiometry of a Precipitation Reaction Abstract: In this experiment the objectives were to try and predict the amount of product that was produced in the precipitation reaction of calcium carbonate by using stoichiometry. Then learn how to figure out the actual yield‚ theoretical yield and percent yield of the experiment. Experiment and Observation: The first step in the experiment was to weigh 1g of CaCl2 +2 H2O‚ then pour it into the 100mL
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Chemicals in Food Chemicals are added to food for (i) their preservation‚ (ii) enhancing their appeal‚ and (iii) adding nutritive value in them. Main categories of food additives are as follows: (i) Food colours (ii) Flavours and sweeteners (iii) Fat emulsifiers and stabilising agents (iv) Flour improvers – antistaling agents and bleaches (v) Antioxidants (vi) Preservatives (vii) Nutritional supplements such as minerals‚ vitamins and amino acids. Except for chemicals of category (vii)‚ none
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