Determining the equilibrium constant from pH values of changing concentrations of ethanoic acid Design Research question: How will altering the concentrations of ethanoic acid affect the pH value‚ and‚ in-turn‚ the equilibrium constant? Background information: When weak acids react‚ the reaction typically does not go to completion. Rather‚ the system goes to an intermediate state in which the rates of the forward and reverse reactions are equal. Such a system is said to be in chemical equilibrium
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Student Mrs. Teacher Class Date Katie Limbach Mrs. Falk Chemistry 09-13-13 Title: Properties of Gases Purpose : The purpose of this lab was to learn about properties‚ both physical and chemical‚ of gases and to be able to identify them. Materials: Matches Toothpicks Pie tin Marker White Vinegar Hydrogen peroxide Measuring spoons Straw Tissue paper Baking soda Test tubes 24 Well Plate Pipet Stoppers for the test tube Chemicals provided by Labpaq Procedure:
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TRIXIE 1. A 25 year old patient is inquiring about the methods or ways to detect cancer Wearlier. The nurse least likely identify this method by stating: A. Annual chest x-ray. B. Annual Pap smear for sexually active women only. C. Annual digital rectal examination for persons over age 40. D. Yearly physical and blood examination 2. The removal of entire breast‚ pectoralis major and minor muscles and neck lymph nodes which is followed by skin grafting is a procedure called: A. Simple mastectomy
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Cells Cells Cell division and cancer Victoria Brothwell Strayer University Cells Introduction Regular cells and cancel cells are extremely different. Depending on the cancer that one may have cancer cells have more chromosomes that are scattered which is for why cancer cells are formed. In cell division all living things obtain cells in which come from other preexisting cells. If normal cells are do not divide and make new cells then cancer will occur. In order of all cells to be
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blue and green when Presence and the more CO2 you use the color changes. Hypothesis: I believe in this experiment the more you exercise then the more CO2 we exhale from our bodies. Material: 2 test tubes Water Bromothymol Blue Straw Graduated Cylinder Marking Pencil Procedures: Pick a Lab partner Label 2 test tubes‚ one A and one B Add 10 ml of water to each test tube using a graduated cylinder Add 8-12 drops of Bromothymol Blue to each tube One of the pair will gently blow on the solution in
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Discussion: The experiment lacked a proper control - While the experiment could not answer the research question‚ this does not disprove the possibility for the choice of bread to affect blood glucose levels; the obtained results were simply not sufficient to prove a connection. This might be due to several reasons‚ but as the experiment lacked a control subject which the other values could have been compared to‚ the results are completely unusable. However‚ there is no consistency in the results
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the start with slight particles showing‚ once adding the salt it still appeared clear. 2. Nasal Irrigation Saline- Solution appeared cloudy once adding the salt and baking soda‚ then it turned semi-clear about 30 secs later; it was more concentrated than the normal saline. Results: 1. Determine the molar mass of NaCl. Show the workup. Na= 23g/mole Cl= 35g/mole Molar mass of NaCl 23g/mole+35g/mole= 58g/mole 2. Determine the molarity of the two solutions you prepared in terms of NaCl. Show the
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Content pg 1.Introduction 2-5 2. Background Of Medical Technology 5-7 3.Medical Technique 8-10 4.Social issues 11 5.Bibliography
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the number of ammonia molecules that will bond together (b) the number of nitrogen atoms in each molecule of ammonia (c) the number of nitrogen and hydrogen atoms in each molecule of ammonia (d) The number of hydrogen atoms in each molecule of ammonia 2. The diagram above shows a block from the periodic table. The number six represents the following consumers eats only producers? (a) atomic mass of the element carbon (b) atomic number of the element carbon (c) number of neutrons in the element carbon
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Question 1: Make a prediction about the basal metabolic rate (BMR) of the remaining rats compared with the BMR of the normal rat you just measured. Your answer : c. The BMR of both remaining rats will be lower than the normal rat’s BMR. Predict Question 2: What do you think will happen after you inject thyroxine into the three rats? Your answer : a. The normal rat will become hyperthyroidic and develop a goiter. Predict Question 3: What do you think will happen after you inject TSH into the three rats
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