Assistant section. 7. Soak the dish in a 10%-bleach solution for 1 hour and then discard it. Part iii: Microbes in the Soil 1. Choose an environmental site to collect a soil sample. Then use a new sample cup to collect a soil sample. 2. Pour distilled water into the cup‚ so the water sits just above the soil level. Mix the water and soil well. 3. Let the sample sit until the soil settles to the bottom of the cup. 4. With a pipet‚ collect a sample of the water layer on top of the soil and inoculate
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experiment this hypothesis by placing Daphnia under a microscope and recording the heartbeats before pouring the caffeine and after pouring the caffeine. The apparatus used involved culture of Daphnia‚ cotton wool‚ cavity slides‚ dropping pipettes‚ distilled water‚ caffeine‚ beakers‚ stopcock‚ paper towels and a microscope. Before starting the experiment we had to set up the microscope. We then had to catch the Daphnia with a plastic pipette and place them on a cavity slide which would have a small amount
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From table 1.1‚ it is shown that at wavelength 590nm‚ bromophenol blue has the Amax which is 0.752. Part 2: The effect of concentration on absorbance of bromophenol blue solution Table 1.2a Tube 1 2 3 4 5 6 A B Distilled water(ml) 2.5 2.0 1.5 1.0 0.5 0 Bromophenol blue 10mg/L (ml) 0 0.5 1.0 1.5 2.0 2.5 Concentration of bromophenol blue(mg/L) 0 2.0 4.0 6.0 8.0 10.0 Absorbance at 590nm (Amax of bromophenol blue) 0 0.182 0.284
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2) The sulphamic acid was then dissolved in 50cm³ of distilled water‚ using a glass rod to ensure it is completely dissolved. 3) Using a funnel‚ we poured the solution into the 250cm³ volumetric flask‚ ensuring the beaker‚ glass rod and funnel were cleaned with distilled water into the volumetric flask to provide that all of the sulphamic acid in the solution was in the volumetric flask. 4) We filled the volumetric flask with distilled water up to the 250cm³ mark‚ making sure that the bottom
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the 250 mL beakers “Beaker 1” and recorded its weight using the electronic pan balance. After weighing the beaker 3.5 to 4 grams of the mixture had to be added and the exact weight of the beaker and the mixture had to be recorded. Then 50 mL of distilled water had to be added and the mixture had to be stirred for one minute before being poured through the filtration apparatus into another preweighed beaker called “Beaker number 2”. Not all of the substance would be easy to get out of beaker 1 so
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Food and Beverage Service Training Manual Preface This training manual is meant to be a guide to all hotel personnel in food and beverage service who are involved in the day-to-day training of staff either part-time. Furthermore‚ it ensures a uniform system of training inputs. It also acts as a self-study guide to any individual who wishes to develop himself/ herself in the vocation of a waiter or restaurant supervisor. The book was developed after understanding the problems that personnel
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Keysville‚ VA. Contact: huntertuck1212@gmail.com Abstract This particular study demonstrated the overall effects of super cooling different types of aqueous solutions. In similar studies conducted upon super cooling water‚ researchers have only used distilled water in their experiments. In this study‚ however‚ rain‚ tap‚ and purified bottled water were used. The researcher’s prediction was that if energy was introduced to each of the super cooled aqueous solutions‚ then nucleation would occur similarly
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Approximately 50 grams) Apparatus :Hydrometer Mechanical Mixer (Milkshake Maker) Dispersing Agent 2 Graduated Cylinders and a Glass Beaker Distilled Water Supply Balance (0.01g accuracy) Thermometer Spatula Hand Stirrer Spray Bottle Timer Vernier Callipers Procedure :Approximately 50g of dry soil was weighed and prepared. The soil is mixed with distilled water to form a smooth thin paste in the mixer cup. 1-2 droplets of the dispersing agent are added from a pipette to the paste and the mixture
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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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From the graph I can clearly see that Distilled water has a much larger concentration of water then the cell sap in the potato tissue. I can make this conclusion because the results show a big increase in weight of the potato piece. Meaning that water has moved from outside the potato into the potato due to Osmosis‚ proving that the distilled water had a higher concentration of water‚ as water moves from a high concentration to a low concentration. I can also see that the glucose
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