Aim: To compare the foaming capacities of five different commercial soaps. Apparatus: 5 test tubes‚ 5 conical flasks (100 ml)‚ test tube stand‚ Bunsen burner and stop watch. Materials Required: 5 different samples of soap and distilled water Theory: The foaming capacity of a soap sample depends upon the nature of soap and its concentration. This can be compared for various samples of soaps by taking the same concentration of solution and shaking them.The foam is formed and the time taken
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burette‚ glass rod ‚volumetric flask 100ml ‚dropper CHEMICALS Potassium permanganate (KMnO4)‚ distilled water PROCEDURE A. Preparation of the KMnO4 standard solution 1. KMnO4 was weigh accurately to nearest mg. The reading was recorded. The solid transfer to a 100ml volumetric flask using funnel. 2. The solid was dissolved with distilled water. The flask was shaken after using stopper. Distilled water was added to the mark ‚the dropper was used when reaching the last drop. The flask was stopped
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Deionized Water vs. Distilled Water Deionized and distilled waters are both processed forms of water. Deionized water is produced by filtering water to the point where it is free of ions. This ion-free water will strip ions from surrounding material‚ acting like a super-solvent. This is often used in semiconductor and other high-tech processing as a "soft" solvent and relatively cheap cleaning fluid. Distilled water is most often produced by vaporizing less pure source water (tap‚ salt or even
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1. Put your safety goggles and lab coat on. 2. Gather all the necessary materials in order to conduct this experiment such as boiled water‚ distilled water‚ calcium chloride‚ distilled water‚ glycerin‚ test tubes‚ nails‚ test tube rack‚ graduated cylinders‚ tongs‚ scoopula‚ erasable marker and parafilm. 3. With the erasable marker‚ label the ten test tubes from 1 to 10. 4. For Test Tube 1‚ drop an iron nail in it without adding anything else. Place the test tube into the to-be-heated rack (50⁰F)
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Better to use a smaller crock pot to cook the ingredients down and then move to a larger one once start adding the liquids. 4. Place 375g of the distilled water into a glass or stainless bowl. Measure out the KOH and slowly pour it into the water while stirring. It may notice it making groaning noises as it dissolves – this is normal. 5. Once mixed‚ add the water/KOH mixture to the oils. Combine by hand to blend the solutions‚ then start using the stick blender. The mixture will be kind of chunky and
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Steel Wool Scissors Ruler Lemon Juice Orange Juice Vinegar Distilled Water Four Small Bowls Thin Towel Tall plastic cup Graph Paper Procedure: Before beginning your experiment‚ make sure that the distilled water has been opened and exposed to the air for at least a few hours. This will allow it to absorb some carbon dioxide from the atmosphere and lower its pH from a level of about 7 to about 5.8. The distilled water will act as a model for "normal" rainwater‚ which has a pH of about
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In this lab activity students performed an experiment with the use of distilled water and baking soda solutions as control. The experimental controls are accuracy indicators of laboratory results. Thus‚ controls are important in a lab because the observation results are dependent on the controls. The experimental results can be determined to be valid when it is compared with the control solution. The higher the similarity between the results and the control solution‚ the more accurate the investigation
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Pino 1 ! Katherine Pino Ms. Warbington Chemistry: Period 5 September 23‚ 2014 Distilled or Poison? There are billions of people all over the world‚ and one thing they all require is water. Directly or indirectly‚ water affects all aspects of life. Without it‚ there would be no vegetation on land‚ no oxygen for animals to breathe and the planet would look entirely different than it does today. It is one of the most essential elements to health and is very important that your body obtains a certain
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upstream and downstream fragments‚ 200 ng of pyrG marker fragment and adjust to 50 μL of double-distilled water. 35. Lysis Buffer: to prepare 50 mL of buffer dissolve 23.6 g of Guanidine thiocyanate (118.16 g/L) in 25 mL of double-distilled water. Once dissolved add: 2.5 mL of 1 M Tris-HCl pH 7.0 (121.14 g/L)‚ 2 mL of 0.5 M EDTA pH 8.0 (186.12 g/L) and 0.05 mL of Triton X-100. Add double-distilled water to 50mL (final concentrations: 4 M guanidine thiocyanate‚ 50 mM Tris-Hcl pH 7.0‚ 20 mM EDTA and
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11.1 Washing with cold distilled water Washing process is not only remove soluble protein‚ fat‚ and pro-oxidant‚ but may also remove antioxidant. Therefore the oxidative stability of muscle ultimately depends upon the antioxidant/prooxidant balance that remains after the muscle is washed. It suggests that washing may promote oxidation in mince since it effectively removes antioxidants from the fish. In addition‚ the neutral lipids are more easily removed than polar lipids‚ phospholipids and free
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