Veins." National Heart Lung and Blood Institue 1 Feb. 2011: n. pag. goggle. Web. 20 May 2012. <http://www.nhlbi.nih.gov>. Staff‚ Mayo Clinic Train‚ Henry D‚ M.D. "Vein Center of Central Pennsylvainia." Paveins. Vein Center of Central Pennsylvania‚ 2008. Web. 20 May 2012. <http://paveins.com>. "Varicose Veins." Cardio Smart: n Weiss‚ Robert‚ M.D. "Varicose Veins and Spider Veins." Medscape (July 2010): n. pag. goggle. Web. 21 May 2012. <http://www.medicine.medscape.com>.
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the NaOH buret 10) Subtract the final volume of NaOH from the initial volume. 11) Repeat this process at least twice more. Materials: Buret (50mL) Graduated Cylinder (10mL) Beakers (250mL) Buret stand Erlenmeyer flask (125mL) Safety goggles Buret clamp 0.10M HCl (aq) (25.0mL) NaOH (aq) Vocab: Standard Solution: a solution containing a precisely known concentration Titration: a measured amount of a solution of unknown concentration is added to a known volume of a second solution
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Variables: Independent Variable: Ratio of reactants Dependent Variable: Temperature change Controlled Variable: Total number of moles of reactants Apparatus: Protective Goggles Thermometer Graduated Cylinder Sodium Hypochlorite (NaClO)‚ solution
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The Effect of Osmosis on The Mass of Eggs Victoria Vu Biology October 22‚ 2013 Introduction & Hypothesis The membrane of an egg is composed of keratin (a type of protein)‚ which is semipermeable. This means only certain materials will be allowed to enter and exit through the egg’s membrane. The purpose of this experiment is study the process in which water molecules pass the egg membrane‚ osmosis. This experiment also gives insight on how other ‘semipermeable membranes’ work‚ like a
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Nitromethane The chemical I did my research on is Nitromethane. In this paper I will talk about several of nitromethanes properties and what it is used for. I will talk about its use in industries. The physical properties‚ chemical properties‚ know toxic properties and the health effects. The testing methods and analytical methods‚ also if it was to spill. How to go about cleaning it up. Acceptable engineering controls and last but not least‚ personal protective equipment. Nitromethane is an
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If the shooter is more experienced in shooting‚ then the BBs would be more accurate and precise. Materials: KWC S&W 1911 45 caliber Airsoft gun Crosman Sticky Target Goggles BBs for gun Ruler Procedure: 1. Ask for 4 volunteers to do this experiment. 2. Load the Airsoft gun with BBs. 3. Ask volunteers to put on goggles in case of ricochet and show them how to pull back the barrel. 4. Tell them to shoot once‚ then wait till results are recorded‚ then shoot again. (Total shots: 5) 5. Tell
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light‚ this results in different shades of parts of the specimen. Apparatus: * Safety goggles * Lab coat * Light microscope * Lamp * Scalpel * Forceps * Slice of onion * Distilled water * Iodine * Watch glass * Glass slide (x2) * Mounted needle Health and safety: Wearing a lab coat protects individuals from iodine staining the clothes. Wearing safety goggles protects eyes from when using the scalpel to cut the onion. Be careful whilst moving around
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CARE OF ISOLATED PATIENT In health care‚ isolation refers to various measures taken to prevent contagious diseases from being spread from a patient to other patients‚ health care workers‚ and visitors‚ or from others to a particular patient. Various forms of isolation exist‚ some of which contact procedures are modified‚ and others in which the patient is kept away from all others. Special equipment is used in the treatment of patients on the various forms of isolation. These most commonly include
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originally reaches the retina‚ it is upside down and small. The visual cortex makes the image so it is upright and larger‚ and it also interprets the object. RUN ON - NOW! put citation In earlier years‚ scientists put see-through goggles on chimpanzees at birth. The goggles allowed light
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measure the mass of the metals. • Calorimeter to trap the heat during the reactions. • Thermometer to measure the initial and final temperatures during the reaction. • Paper and pencil to record data such as masses and temperatures. • Lab coat and goggles for safety. VARIABLES • Dependent: Temperature • Independent: Type of substance CONTROL VARIABLE • The mass of the substance is the control variable‚ since there is a fixed amount of substance being used in the reaction to control the rate of
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