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) located on the side bench and proceed to the next step. 5. For Test Tube 2‚ drop an iron nail in it without adding anything else. Place the test tube into the to-be-cooled rack located
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suspension 10 test tubes 4 beakers Thermometers Measuring cylinders Test tube pegs Test tube rack Bunsen burner Tripod Gauze mat Ice cubes/refrigerated water Ruler Safety goggles Pipettes Method: 1. Set up equipment as follows: Beaker Temperature (˚C) 6% Hydrogen peroxide (mL) Liver suspension (mL) 1 10 3 2 10 3 3 10 3 4 37 10 3 5 50 10 3 2. Fill beaker 1 with 250mL of ice cubes and tap water and record temperature. 3. Place a pair of test tubes‚ one of hydrogen
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patients cared for at hospital or at home have Percutanious gastrostomy feeding tubes (Jones et al‚ 2006). Dysphagia is the most common reason for initiating gastrostomy tube feeding commonly as a result of cerebro vascular accident‚ multiple sclerosis‚ motor neurone disease and cerebral trauma (Parker et al‚ 2006). There are two types of peg tubes‚ those that last 18 months to two years and balloon retained gastrostomy tubes which require replacement every 2-3 months (Collier‚ 2007). One of the most
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Equipment: 20 ml of 0.00100 molL-1 potassium permanganate 20 ml distilled water 6 identical test tubes 1 Test tube rack 1 plastic pipette 10 ml measuring cylinder Photometer Method: 1. Measure 5 ml of potassium permanganate with the measuring cylinder‚ place this into the 1st test tube. Then measure 2 ml of distilled water with a plastic pipette‚ also place in the 1st test tube. Stir the solution gently with the pipette to ensure that the potassium permanganate is evenly diffused
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calcium carbide 3 large test tubes of similar size with stoppers (held in large empty beaker) Wooden splint and lit candle Large beaker (500mL to 1L) half full of water Pre-lab Exercise: 1. In this lab we will produce acetylene by placing calcium carbide (CaC2) in water. Write the chemical formula for the reaction between calcium carbide and water knowing that the product is acetylene (C2H2). 2. The acetylene in this lab will be collected in a test tube and burned. Write the balanced
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find the rate of reaction of the decomposition of hydrogen peroxide. * Control Variable- 1mL of yeast (catalyst) is being used in every trial. The volume of H2O2 is always 4 mL‚ even though the concentration changes and the sizes and type of test tube was the same because it can change the pressure. * Independent Variable- Concentration of H2O2 (M) and the temperature (°C) * Dependent Variable- The rate of reaction of the decomposition of hydrogen peroxide → rate of reaction = ∆ Pressure
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YAMBAO‚ Monn Juleuse F. mjfyambao@gmail.com E304: Kundt’s Tube: Velocity of Sound in Solid METHODOLOGY Two experiments were done last time due to some circumstances that made the class to lack time and to be late compared to the official class syllabus. The students were able to accomplished the job by equally dividing the time into two. The first experiment was about Kundt’s tube. In this experiment‚ longitudinal sound waves will be produced in a metal rod and an air column. Using the properties
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located minus (-) charged electrons movements ( behavior ) Elektroniker to leveraging the science of making various equipment . Electronic ‚ electrical current pass‚ conductor ‚ semiconductor‚ superior conductor ‚ resistor‚ capacitor ‚ inductor‚ vacuum tubes and nano -scale structures fabricated elements and these elements assembly caused by the development of devices concerned with engineering is a branch . 2 Numerous devices used in everyday life are manufactured using electronic elements . Nearly
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Introduction The 14-French (F) pigtail catheters (PCs) are small-caliber catheters that are percutaneously placed at bedside‚ in comparison with the tradition large-caliber (32-40F) chest tubes (CTs) that are placed by an open cut-down technique 1-3. The PC’s roles and its effectiveness in the management of trauma patients with pneumothorax 3 and hemothorax (HTX)/hemopneumothorax (HPTX) 4 have previously been published. It is controversial and many clinicians still question whether or not blood
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hand‚ decrease in salt concentration results in a hypertonic solution where the mass of the potato decreases due to the movement of water outside the cell. MATERIALS: Potato Forceps Stopwatch Scalpel Test tubes Knife Mass balance Graduated cylinder ruler salt solution test tube rack PROCEDURE: 1. Cut 18 potato cores from the same potato using a knife and place them onto the lab bench. Using a scalpel and ruler (calibrated in millimeters) cut the cores into 50 mm lengths‚ with care
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