closely. Digoxin ought to be administered with meals to reduce the consequences of gastric exasperation that may arise if taken without food. Both Furosemide and digoxin can grounds hypokalemia which can be regulated by encouraging Mrs. A to eat potassium-rich foods‚ educating her on dosage regimen‚ report signs of digitalis toxicity‚ and follow the treatment
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change at the end point”. In this case‚ the indicator was phenolphthalein solution. WHAT IS THE COLOR CHANGE AND HOW DID YOU FIND IT What effect would each of the errors described below have on the concentration of the potassium hydrogen phthalate: - Some of the solid potassium hydrogen phthalate was spilled in making the transfer - Not enough water was added to bring the volume up to the mark These errors would affect the overall results of the experiment. What effect would each of the errors
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Through experimental research‚ the percent oxygen of potassium chlorate can be determined using tactics such as stoichiometry‚ a technique used to determine the amount of substances that are in a reaction. Stoichiometry is an efficient way to determine how much of a certain substance is within a certain compound‚ which is used in many practical ways‚ such as pharmaceutical companies using stoichiometry to determine how much of a particular chemical is needed to use within a drug. However‚ within
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Signals Traveling in Neurons Two opposing ideas about the nervous system * Reticular theory ( the nervous system consisted of a large network of fused nerve cells) * Neuron theory ( the nervous system consisted of distinct elements or cells * Discovery of staining led to the acceptance of neuron theory. Staining is a chemical technique that caused nerve cells to become colored so they stood out from surrounding tissue * A way of electricity is transmitted in groups of neurons‚ such
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90oC electric water bath OR hot plate) * 250 cm3 beaker * boiling tube * anti- bumping granules * forceps * test tube holder * white tile * leaf to be tested (hibiscus leaves are excellent) * 90% ethanol * iodine/potassium iodide solution PROCEDURE: The video above shows the steps in Testing a Leaf for the Presence of Starch. The Procedure outlined below is slightly different. 1. Remove a green leaf fom a plant that has been exposed to sunlight for a few hours
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and Water-We studied the difference between mineral oil and water using a hand lens. * Making iodine in water- We added one drop of potassium iodide and sodium hypochlorite (bleach) then mixed the two together producing iodine. * Making iodine in oil-We added two drops of mineral oil‚ one drop of water on the mineral oil‚ then added one drop of potassium iodide and sodium hypochlorite. Producing Iodine. Results: In class we conducted four experiments on
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with brand ‘X’ of iron tablets which contains iron (II) sulphate along with other compounds. You are to prepare a solution of this tablet which has been grounded for you. You are also required to titrate this solution with a standard solution of potassium manganate solution. This type of titration is an example of a redox titration. PROCEDURE: (A) Preparation of Solution ‘X’ 1. Weigh 6g of brand ‘X’ of iron tablets 2. Dissolve in 100cm3 of 1.0 moldm-3 H2SO4(aq) in a conical flask. When necessary
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= 2.8g = 0.1N | Hydrochloric acid HCl‚ FW = 36.5‚ Density = 1.2 1M = 83mls = 1N (Use 86mls) 250ml 0.1M = 2mls = 0.1N 1 liter 0.1M soln = 8.6mls = 0.1N | Oxalic acid H2C2O4.2H2O‚ FW = 126.07‚ Eq. = 63g/l 250ml 0.05M = 1.575g = 0.1N | Potassium hydrogen phthalate KH(C8H4O4)‚ FW = 204.23‚ Eq. =204g/l 250ml 0.1M = 5.105g = 0.1N | Potassiun hydrogen iodate KH(IO3)2‚ FW = 389.92‚ Eq. 73.07g/l 250ml 0.1M = 9.75g = 0.1N | Sodium carbonate Na2CO3‚ FW = 106‚ Eq. =53g/l 250ml 0.05M = 1
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Tests for unsaturation were performed adding drops of bromine in tetrachloride and potassium permanganate to four test tubes‚ two containing 5 drops of cyclohexanol(control)‚ and two containing cyclohexene(prepared product. 3 drops of bromine solution changed the product from red to clear within in 5 seconds. The control remained red after 5 drops of bromine were added. Likewise‚ 3 drops of potassium permanganate changed the product from purple to brown within 3 seconds. The control
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sharp spike (almost vertical line to a steady decline‚ reaching a top of approximately 0.034)‚ however potassium (which peaks at 0.013) is a gentle rise and decline. Sodium conductance peaks at the same time as the membrane voltage. The potassium conductance begins to increase at about 0mV. The sodium conductance begins to increase at -34mV. Sodium movement is much higher at the beginning. Potassium is gradual from middle to end. D. 3.8ms to 5ms (end of graph). Sodium current is reaching zero‚ then
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