water to determine their solubility. 4. Mix some of the Iron and Sulfur on a clean disposable dish and examine the mixture with a magnifying glass and magnet. Record your observations in the data table. Save and label this mixture. 5. Mix some of the sand and Sodium Chloride on a clean disposable dish and examine the mixture with a magnifying glass and magnet. Then‚ place this mixture in a clean 100-mL beaker. Add 30 mL of tap water and stir. Prepare a filtration setup‚ filter‚ and record your observations
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which a compound or mixture of compounds is transferred from one phase into another. We will be looking specifically at an organic solvent extraction which is a type of solid-liquid extraction. This type of extraction utilizes an organic solvent that has a high affinity for the compound of interest. Most reactions produce a crude mixture of undesired reagent‚ byproducts‚ as well as the desired product. Extraction allows for the separation of a compound from a complex mixture. The different components
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acid Fine powdery white solid crystals 95% ethanol Clear colorless liquid Acetyl chloride Clear colorless liquid with gas escaping from container FeCl3 Clear colorless liquid Commercial aspirin Fine powdery white solid crystals I2/KI Deep black liquid KMnO4 Brownish liquid Phosphoric acid Clear colorless liquid Table 2. Preparation of Aspirin. Description Salicylic acid + Acetyl chloride Cloudy white liquid with undissolved white powder Mixture at room temp White cloudy
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matter Pure substance Element Compound Mixture Homogenous Heterogeneous colloid Suspension True solution MATTER Everything in the Universe is made up of MATTER PURE SUBSTANCE The substance which contains same kind of Atom or Molecule i] element A pure substance which contain same kind of Atom ii] compound A pure substance which contain same kind of Atom or Molecule but made up of different Atoms through a Chemical bound Mixture Mixture are constitutor by more than one kind of pure
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September 25‚ 2013 Lab Section: CHE110L*Z Purpose The purpose of this experiment is to use two common laboratory methods to see how mixtures can be separated based on physical properties. Paper chromatography will be used to separate the dye colors from M&M candy to see which colors contain yellow #5. Gravimetric separation will be used to separate salt and sand from a mixture. Procedure The procedure for this lab can be found on pages 16 – 30 in “General Chemistry CHE110L Laboratory Manual Fall 2013”
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Outline the role of a chemist employed in a named industry or enterprise‚ identifying the branch of chemistry undertaken by the chemist and explaining a chemical principle that the chemist uses Burhan Gemikonakli is a Plant Chemist at Qenos‚ a major Australian chemical manufacturing company located at Botany‚ NSW. The role of a plant chemist working in the polymer industry is concerned with the conversion of ethane to ethylene and the polymerisation of ethylene to polyethylene. Examples of
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of emotion towards her. As the poem leads on through the twelve stanzas it becomes increasingly sad and disfunctional however in parts showing a comical side. The frequent use of the pronouns ’he’ and ’she’ in the poem proves the disfuntion and seperation of the couple as their marriage falls apart. The 12‚ 3 line stanzas are biographical. The story has been told to the author from the prospective of the wife who is clearly unhappy in her marriage. We don’t know fully how her husband is feeling
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research students different methods of separating substances from one another. Materials that are not uniform in composition are set to be impure or heterogeneous and are called mixtures. The separation of the components of mixtures is based upon the fact that each component has different physical properties. The components of mixtures are always pure substances‚ either compounds or elements‚ and each pure substance possesses a unique set of properties. Every crystal of a pure substance
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bulk of the acetamido group has no influence. The ortho substitution product is formed in small quantities in this reaction. SPECIAL INSTRUCTIONS Concentrated sulfuric and nitric acids‚ in combination‚ form a very hazardous and corrosive mixture. These acids should be poured together carefully‚ and this procedure should be carried out in a hood‚ since noxious vapors are produced. You will begin with the sample of acetanilide you isolated and purified in the first two experiments. If you
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FeNCS2+(aq) yellow colourless blood red The colour produced by the complex ion indicates the position of equilibrium. In this experiment‚ iron(III) chloride solution‚ potassium thiocyanate solution and solid ammonium chloride were added to the mixture solution to find out the factors that affecting the equilibrium position. Procedure Two drops of iron(III) chloride solution and two drops of potassium thiocyanate solution were mixed together in a test-tube and then about
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