OBJECTIVE 1. To practice correct method of handling laboratory apparatus. 2. To determine the density of water. CHEMICAL/APPARATUS 250mL beaker‚ pipette‚ burette‚ top loading balance‚ 50mL measuring cylinder‚ filter funnel‚ pipette bulb/pipette filler METHODS A) Determining the density of water by using a burette. 1. The mass of the empty beaker is weighed by using a top loading balance in unit grams. 2. The burette is washed with tap water. 3. The burette
Premium Water Density Volume
experiment sterile. 2. Wipe the work station with Wescodyne and paper towels. It is important to keep the sterile materials such as slides in petri dish‚ Pasteur pipette in container and forceps covered as much as possible. 3. Place four to five filter papers in the petri dish and drip few drops of water on the strips‚ this will maintain moisture in the agar cushions. 4. Remove a Pasteur pipette from its container and attach a bulb to it. 5. Obtain a tube of hot sterile agar‚ and make two agar
Premium Petri dish Water Agar plate
separatory funnel‚ beakers‚ evaporating dish‚ water bath‚ graduated cylinder‚ stirring rod‚ watch glass‚ distilling flask‚ thermometer‚ tripod‚ wire gauze‚ burner‚ iron stand‚ burette‚ damps‚ utility damps‚ condenser adapter‚ receiver‚ medicine dropper and filter papers. Procedure Solution and Filtration A mixture of 1g benzoic acid and 1g sugar was divided into three equal parts. The first portion of the
Premium Distillation Solvent Water
physical‚ and psychological impairments and problems in infants and children. A developing fetus really is a part of its mother‚ sharing oxygen and nutrients through the umbilical cord and across the fluid-filled bubble known as the placenta. It was once thought the placenta as a natural filter‚ shielding the fetus from external harm. Today‚ we know that virtually everything in a woman’s bloodstream passes through to the developing organs of the fetus. Since a fetus can’t remove harmful substances on
Premium Pregnancy Fetus Childbirth
takes a long time‚ because it requires the pre-identification of certain species in a living state under high magnification of a microscope. To prevent the fixative fluid from drying or crystallising‚ hold the concave slide in a Petri dish with moist filter paper on the bottom‚ or cover embryonic dish with a
Premium
Measure 5 mL distilled water by using a graduated cylinder with a dropper and add distilled water into the test tube‚ stir it with a stirring rod. 8. Put an empty test tube into a test tube holder. 9. Put filter paper into a funnel and put the funnel into the test tube in the test tube holder. 10. Filter the distilled water-ash mixture. 11. Put 5 mL KSCN solution into the test tube that the filtrate is in by using a
Premium Chemistry Water Concentration
building. Operators used a system of pipes and compressors to move the gas to waste gas decay tanks. The compressors leaked‚ and some radioactive gas was released to the environment. These went through high-efficiency particulate air (HEPA) filters and charcoal filters which removed most of the radionuclides‚ except for the noble gases‚ the estimated total of which was about 370 PBq (the Kemeny Commission said ‘a maximum of 480 PBq noble gases’ and NRC also quotes 1.6 PBq of krypton rlelease in July)
Premium Nuclear power Three Mile Island accident
Discussion: The effect of wavelength of light on the rate of photosynthesis was investigated in this experiment. The results from Figure 13 suggest that white light‚ containing all wavelengths of coloured light‚ has the highest rate of photosynthesis. Purple light had the second highest efficiency‚ followed by blue‚ red‚ and yellow light. Green light was significantly less efficient‚ producing the second lowest pH reading (Figure 14). The samples exposed to no light had the lowest rate of photosynthesis
Premium Photosynthesis Light Chlorophyll
Entitlement Buyer seller Intent – No filters BIG VOICE Feel at ease‚ real conversation Breaking tonality – challenge X Dont sell‚ buy – all like you Win over‚ u deserve Who more reactive‚ care more about conver Man to woman Open everywhere Dont pull in‚ draw in Bambi eyes Not makeoutguy‚ roller coaster to sex Let her qualify to u‚ dont promote urself Give her opp to leave‚ window of investment Make her chase! Not talking investement but emotional investment Selfamusement Examining
Premium Fuck 2006 singles Debut albums
Aquaporin Water Channels Peter Agre Roderick MacKinnon All living matter is made up of cells. A single human being has as many as the stars in a galaxy‚ about one hundred thousand million. The various cells – e.g. muscle cells‚ kidney cells and nerve cells – act together in an intricate system in each one of us. Through pioneering discoveries concerning the water and ion channels of cells‚ this year’s Nobel Laureates Peter Agre and Roderick MacKinnon‚ have contributed to fundamental chemical
Premium Protein Cell membrane Sodium