theoretical mass of precipitate and calculate the percent yield. Materials: Balance 0.70 M sodium carbonate solution‚ Na2CO3(aq) Graduated cylinder 0.50 M calcium chloride solution‚ CaCl2(aq) Beaker (250 mL) Wash Bottle (distilled H2O) Filter paper Funnel Iron ring Ring stand Procedure: Part I: The Precipitation Reaction (Day 1) 1. Obtain two clean‚ dry 25 mL graduated cylinders and one 250 mL beaker. 2. In one of the graduated cylinders‚ measure 25 mL of the Na2CO3 solution
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Experiment 1: Purification of Benzoic Acid by Recrystallization III. Introduction Purification - physical separation of impurities and by-products from an impure sample pure substance. *Distillation- for liquid compounds‚ *Recrystallization- solid compounds Recrystallization - precipitation of a solid cpd. from a saturated solution in the form of crystals through cooling or evaporation -7 steps: 1) selecting the appropriate solvent 2) dissolving the solute 3) decolorizing the
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What is water purification? Water purification generally means freeing water from any kind of impurity it contains‚ such as contaminants or micro organisms. Water purification is not a very one-sided process; the purification process contains many steps. The steps that need to be progressed depend on the kind of impurities that are found in the water. This can differ very much for different types of water. In which ways is polluted water treated? Settling Before the purification process begins some
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tank dirty?” There are a few different reasons my tank looks dirty; the filters need to be changed‚ the PH levels are off a bit‚ or I have been over-feeding my fish. The third step is to choose one of the options to create an experiment. I choose changing the filters as my hypothesis. The fourth step is prediction. I must predict what I believe will happen when I change the filters. My prediction is that changing the filters will clean the tank water within 24 hours. After this time the water will
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Stir the reaction mixture for a few minutes. 10. Obtain a piece of filter paper‚ determine its mass. (Record mass) 11. Set up the apparatus (funnel‚ ring stand‚ filter paper) for filtration while the precipitate in the beaker settles. 12. Place the empty beaker under the funnel and transfer the reaction mixture to the filter paper. (Careful! Do not allow reaction mixture to rise above the rim of the filter paper) 13. Add approximately 10 mL of distilled water to the reaction mixture
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Colorado Northwestern Community College Science of Biology Mrs. Farrow Lab 3 – Slime Time Submitted by Chase Kenemer 22 February 2015 Abstract Polar solvents dissolve‚ or pick-up‚ polar substances and non-polar solvents dissolve‚ or pick-up‚ non-polar substances. In the conducted experiment‚ the polarity of molecules and their properties are explored. The results of using two solvents on both polar and non-polar inks‚ further verify this to be true. The student conducted the experiment
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Steve Patterson. In this Photoshop text effects tutorial‚ we’re going to learn how to create a fire text effect‚ engulfing our letters in burning hot flames. We’ll be using Photoshop’s powerful Liquify filter for most of the work on the flames themselves‚ but we’ll also be taking a look at the Wind filter‚ using adjustment layers to colorize the flames‚ layer styles for adding color to our text‚ layer masks for blending the flames with the letters‚ and more! Here’s the result we’ll be working towards:
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purify water. After straining the water twice through clean muslin cloth‚ it is boiled for ten minutes lo kill the microbes present in it and also remove the temporary hardness of water. Filtration - Different varieties of filters are used to purify the water at domestic level. Filter rods can be installed. These rods are made of china porcelain and it is porous and hollow from the centre. When water is put through it‚ it is purifies and drips in out clean into a small tank‚ ready for use. Industrial:
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Percent Copper and Formula of a Copper Compound Sofia Economides Date Preformed: 3/19/2012 Date Submitted: 3/26/2012 Lab Partners: Anita Smith‚ Taylor Bell‚ Derek Bourgeois 1. Purpose a. To determine the percent of copper and the formula weight of a copper compound. 2. Introduction a. Magnesium is a very active metal which can reduce copper (II) ions in a weight sample of a compound to metallic copper. The reduction of copper ions in a compound to a copper metal
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Chapter 4 Downstream Processing Objectives Student should be able to Define filtration‚ centrifugation‚ cell disruption‚ solvent extraction‚ chromatography‚ membrane process‚ action of force field‚ evaporation & drying Explain briefly on the concept of each topics stated above List out the uses & importance of each topic stated Introduction Each stage in the overall recovery procedure is strongly dependent on the history & quality of the biological production process. Maximization of
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