The Discussion of this experiment began with discussing how many materials we use today are actually mixtures of pure substances. The separation of these materials into their pure substances can be quite challenging. When we are discussing separations of a mixture that contains pure substances‚ it all depends on whether you can separate the substances by physical means. That means‚ utilizing each substances physical properties such as boiling point‚ melting point‚ and magnetism. Separation of a
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Sodium: Sodium is essential to all living beings Basic functions: Sodium has 3 main functions: it helps in the absorption of glucose and some amino acids in the small intestine‚ it is required for normal muscle and nerve function‚ and it aids in water balance. Glucose generated by digestion of starch or lactose is absorbed in the small intestine only by cotransport with sodium‚ a fact that has exceptionally important implications in medicine. Glucose and galactose are taken into the enterocyte by
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them to determine the molar mass of a substance. Materials and chemicals: 800mL beaker balance weighing paper Thermometer 400mL beaker wire stirrer ring stand unknown solid 15x150mm test tube clamp watch acetone Ice cyclohexane sodium chloride Lab Safety: Wear protective googles‚ apron‚ and gloves. Procedures: Prepare ice/salt/water bath Place 50g of solid NaCl in a 400mL beaker and add just enough water to dissolve the salt. Fill an 800mL beaker 2/3 full of ice‚ and then pour
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powder. The product which was used from the previous reaction is the limiting. In the initial step‚ the solid copper is the limiting reactant. For this experiment‚ the materials that will be used are copper wire‚ aluminum wire‚ six molar nitric acid‚ sodium hydroxide‚ six molar hydrochloric acid‚ a vacuum filtration apparatus‚ and ice. Experimental Procedures: 1. First the copper wire that is twenty four gauge must be cut to approximately 40 cm. Take steel wool and scrape of all impurities off the
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Purpose: The purpose of this experiment is to determine the number of moles of water molecules of crystallization of a sample of hydrated Barium Chloride. This can be calculated using Gravimetric Analysis and to indirectly determine the percent composition of a hydrate by taking advantage of its chemical properties. Introduction: Gravimetric procedures are analytical methods in which the results are determined from the masses of starting materials and products. These methods
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Melting Point (°C) Density (g/ml) Safety 1-bromobutane 137.03 102 -112 1.269 Flammable‚ irritant 2-chloro-2-methylpropane 92.57 51 -26 0.89 Flammable‚ irritant acetone 58.08 56.5 -95 0.793 flammable Crotyl Chloride 90.55 73 -65 0.923 Flammable‚ irritant Benzyl Chloride 126.59 179 -43 1.211 Flammable‚ irritant Bromobenzene 157.02 156 -31 1.491 Flammable‚ irritant bromocyclohexane 163.10 167 -57 1.324 Irritant‚ flammable Bromocyclopentane 149.03 138 -95 1.390 Irritant‚ flammable
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Sodium is a mineral that is present only in small quantities in most natural foods‚ but salt is added‚ often in large amounts‚ in food processing and by cooks to enhance flavor. Sodium is the predominant ion in extra cellular fluid. Sodium (Na) is the predominant cation in extra cellular fluid and its concentration is under tight homeostatic control. Excess dietary sodium is excreted in the urine. The kidney very efficiently reabsorbs the mineral when intakes are low or losses are excessive. Sodium
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substances necessary for cells to function. It’s intended for intravenous administration‚ but if a suitable vein cannot be found it can be given orally which has an unpleasant taste. It is made up of NaCl (sodium chloride)‚ NaC3H5O3 (sodium lactate)‚ CaCl2 (Calcuim Chloride)‚ and KCl (potassium Chloride). Lactated Ringer’s has a pH of 6.5‚ but is an alkalizing solution. Therapy Lactated Ringer’s solution is used to induce urine output in patients with renal failure‚ and to supply water and electrolytes
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regulate the body’s temperature and maintains physiological functions. There are many different ways that someone can be hydrated. Typically‚ people think of water but there are other isotonic solutions such as Gatorade‚ coconut water‚ and pure sodium chloride solution (Marques Vanderlei‚ Moreno‚ Marques Vanderlei‚ Pastre‚ de Abreu‚
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solution. Mix. Record color change. B. Calcium oxalate equilibrium Put 5 mL of .1 M calcium chloride and 5 mL of .1 M sodium oxalate into 6 inch test tube. Mix by stoppering and inverting. Equilibrium is established by formation of white precipitate. Add concentrated HCl. Shake after each drop. Record any changes. C. Cobalt chloride equilibrium Heat 2 mL of saturated aqueous solution of cobalt chloride to boiling in a 6 inch test tube. Record the color before heating. Now place tube in ice water
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