inevitably produced from the incomplete combustion of gasoline or coal that originates in industrial and agricultural processes1. PAHs are also water pollutants and may be found in water supplies across the United States2. Research conducted on laboratory animals exposed to low levels of PAHs have shown that the animals commonly develop various types of cancer and other harmful health effects. The
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Purpose The purpose of this exercise is to learn aseptic technique procedures and there importance and also to learn to isolate colonies using the streak plate technique. Introduction Bacteria are inoculated (introduced) and cultured (grown) in the laboratory for test studies to determine their morphology (the shape‚ size‚ arrangement‚ and internal structures) and pathology (ability to cause disease). Inoculation has to be performed without adding other microbes or contaminants. Aseptic (sterile) technique
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Beakers‚ 50-mL‚ 2-3 ; Test tubes (13 x 100)mm 3-8 ; FD&C Blue 1 stock solution‚ 50-mL ; Lens tissues ; Pipets‚ serological‚ 10-mL ; Sample of consumer sports drink‚ 10-mL ; Spectrophotometer ; Test tube rack Procedure: 1) Preeminently‚ follow all laboratory safety guidelines ensuring that you have safety goggles on at all times throughout the lab. 2) Fill the cuvette 2/3 of the way with water. 3) Select the appropriate wavelength on the spectrophotometer. 4) Place the cuvette in the spectrophotometer
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Introduction Chemical reactions don’t typically go to completion. Instead‚ the system goes to an intermediate state where the rate of the forward reaction and the rate of the reverse reaction equal each other. At this point‚ the concentrations do not change with time. These reactions are said to be in equilibrium. Equilibrium is depended on a particular temperature‚ and the concentrations of reactants and products have to follow a rule demonstrated by the equilibrium constant Kc. The equilibrium
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References: http://answers.yahoo.com/question/index?qid=20080911092315AAXRbXU http://answers.yahoo.com/question/index?qid=20090603175731AAvMEzf A Small Scale approach to organic laboratory techniques‚ 3rd edition. Pavia‚ Lampman
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EXPERIMENT 2 : UV-VISIBLE DETERMINATION OF AN UNKNOWN CONCENTRATION OF KMnO4 OBJECTIVE 1. To determine the maximum wavelength of potassium permanganate. 2. To plot the calibration curve of potassium permanganate. 3. To determine the concentration of an unknown solution of potassium permanganate. APPARATUS Beaker‚ burette‚ glass rod ‚volumetric flask 100ml ‚dropper CHEMICALS Potassium permanganate (KMnO4)‚ distilled water PROCEDURE A. Preparation of the KMnO4 standard solution
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AMR was allowed to reach steady state conditions. Traditionally‚ steady state conditions are defined as the state when temperature at each thermocouple locations approximately does not change with time. However‚ and due to the limitation of the laboratory‚ and after several experiments found the initial control of the fluid flow rate was a difficult process‚ also the measuring of the actual time variation of the fluid flow rate. Furthermore‚ due to the little mass of fluid flow‚ the experiments didn’t
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air. Because inorganic chemists desire to work with compound that have some component that is air sensitive‚ they have devised a couple of ways to manipulate air-sensitive materials. We will focus our efforts on the use of a Schlenk line in this laboratory. A Schlenk line is a piece of equipment that is designed with the purpose of conducting experimental operations and techniques under an inert air environment. You will be shown how to use a Schlenk line during lab. Experimental Metal carbonyls
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Medical Laboratory Technologist Have you ever wondered what a Medical Laboratory Technologist does? Well‚ a Medical Laboratory Technologist performs essential laboratory testing that is critical to the detection‚ diagnosis‚ and treatment of disease. To define the work of a Medical Laboratory Technologist‚ this paper will discuss the job itself and its working conditions‚ the skills and schooling needed for success‚ a salary range and pathways to advance in the field‚ and the further job opportunities
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Separation and Identification of Organics from an Aqueous/Organic Environment through Physical Manipulation Date Lab Performed: Nov. 11/2013 Date Lab Submitted: Nov. 18/2013 Introduction We conducted this experiment to investigate the technique of liquid / liquid extraction‚ the miscibility of organics and water and the effect of a mixture of compounds in methylene chloride versus pure compounds retention time as introduced to a Gas
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