experiment teaches the students how to determine density‚ volume‚ and percentage errors. OBJECTIVE The objective of this experiment is to determine the order with respect to permanganate ion and to oxalic acid concentration for the reaction of potassium permanganate and oxalic acid solutions. Other goals include‚ writing a rate equation and determining the effect of increased temperature on the rate of this reaction. MATERIALS AND EQUIPMENT The materials required for this experiment include the
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Oxygen (O) Human beings obtain this element from the air. It enters a person’s bloodstream through the lungs. The blood carries oxygen to the cells of the body. In the cells‚ oxygen combines with chemicals obtained from food. Energy produced during this process makes it possible for each cell to perform its function in the body. Also‚ oxygen atoms are present in water and water is essential to all life. It is present in many organic compounds. While oxygen is necessary for life‚ oxygen as ozone
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Experiment 4: Analyze a solution of potassium hydroxide using standard hydrochloric acid Theory . Introduction: Titration is a procedure used in chemistry in order to determines the molarity of an acid or a base. In the other words‚ it is also consider as acid-base neutralization reaction (Darrell D. Ebbing 1976). A chemical reaction is set up between a know volume of a solution of unknown concentration and a known volume of a solution with a known concentration. The relative acidity or
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The Relationship Between the Rate of Diffusion and Molecular Weight as Observed in Postassium manganate‚ Potassium dichromate‚ and Methylene Blue Elisha Padilla Group 3 Sec. X – 8L March 26‚ 20151 ABSTRACT The relationship between the rate of diffusion and the molecular weight of a substance was determined by introducing three substances (KMnO₄‚ K₂Cr₂O₇‚ C₁₆H₁₈N₃SCl) of different molecular weight to agar-water gel‚ and measuring the distance of diffusion every
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Potassium is a major electrolyte that helps the body maintain fluid balance and action potentials. It does this by moving in and out of the body’s cells with the help of the sodium-potassium pump‚ an active transport system than moves potassium against its concentration gradient. This is what gives cells their membrane potential. In acidosis‚ there is a high concentration of hydrogen ions in the extracellular fluid‚ this promotes an influx of Hydrogen ions into the cells. As the electro positive
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phosphate are the two products that are insoluble in water. In the three of the four reactions a cloudy white or yellow formed. This indicated the formation of a precipitate‚ caused by the generally insoluble phosphate anion. Potassium chloride‚ Iron nitrate‚ and potassium sulfate where the products which were soluble in water. With these products there was no evidence of a precipitate forming. 2. Based on the results from reactions A and B for the first group of reactions‚ the generally insoluble
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Chloride Potassium Thiocyanate Sodium Sulfate - Stayed white in color - Turned cloudy in color - Precipitation formed in solution - Stayed white in color Potassium Chloride - Turned cloudy in color - Precipitation formed in solution - Stayed white in color - Stayed white in color Iron (III) Nitrate - Stayed orange in color - Stayed orange in color - Changed color from orange to black Chemical Changes of Test Solutions Test Solution Silver Nitrate Barium Chloride Potassium Thiocyanate
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Effects of oligomycin‚ ouabain‚ p-Aminohippurate‚ sodium concentrations and potassium concentrations on active transport of the Malpighian tubules of Acheta domesticus Key Words: Malpighian tubules‚ Acheta domesticus‚ PAH‚ ouabain‚ oligomycin‚ Na+‚ K+ Silvia Kilic 100488712 BIOL 3040U CRN: 70041 Thursday‚ March 5th‚ 2015. Results The Malpighian tubules were incubated in the solutions for 15 minutes before being observed. The transport of CPR into the lumen was highest when there was no addition
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hours‚ as needed for pain. The morning electrolytes reveal serum potassium of 3.2 mEq/L. (Learning Objective 4) a. What are possible causes of a low potassium level? a. The possible causes of the low potassium may be related to the fact that she is NPO‚ the suction may be another cause‚ in addition to the furosemide. b. What action should the nurse take in relation to the serum potassium level? a. The nurse should administer potassium to the patient to balance her levels. c. What clinical manifestations
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same molecular formula iv.both have the same physical properties a.i‚iv b.ii‚iii c.i‚ii‚iii d.ii‚iii‚iv paper 2 1.in an experiment‚bromine water is added drop by drop into the potassium iodide solution in a test tube until bromine water is in excess.the test tube is shaken. a.i.state the colour of the potassium iodide solution(1m) ii.what solution colour is produced after it is mixed and shaken with bromine water?(1m) b.a small amount of tetrachloromethane liquid is added to the product
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