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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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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and tertiary alcohols with acid and with an oxidizing agent. Materials chemical safety goggles lab apron protective gloves test-tube rack eyedropper dropper bottles containing butan-1-ol butan-2-ol 2-methylpropan-2-ol potassium permanganate solution‚ KMnO4 (aq) (0.01 mol/L) concentrated hydrochloric acid‚ HCl (aq) (12 mol/L) (for teacher use only) Procedure 1) Put on your safety goggles‚ apron‚ and protective gloves. 2) Put 3 test tubes in a test-tube rack. From the dropper
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Saint Peter’s Prep Science Department AP Chemistry Alexander D. Canale Term: 2013-2014 AP Chemistry Description The AP Chemistry course is designed to be the equivalent of the general chemistry course usually taken during the first college year. For some students‚ this course enables them to undertake‚ in their first year‚ second-year work in the chemistry sequence at their institution or to register in courses in other fields where general chemistry is a prerequisite. For other
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these reactions. Safety: 1. Wear goggles and a lab apron or coat. 2. Tie back long hair and secure loose clothing before working with an open flame. 3. Corrosive substance; avoid contact with skin‚ eyes‚ and clothing. Do not inhale vapor. 4. Poisonous or noxious vapors. Use the fume hood when directed to do so. Do not inhale vapor. Equipment and Materials: * 250 mL beaker * 1.5 g Copper * Scooper * Scale * Goggles * Nitric Acid * Fume Hood *
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Infrared energy between 500 to 3000 nanometers. They are used to keep food warm or to heat bathrooms. They are also used to keep small animals and reptiles warm or even to help hatch the eggs of the reptile. Infrared is used especially in night vision goggles and equipment when there isn’t enough light to see. All objects emit infrared rays (the hotter the object‚ the stronger the rays)
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