silver Starch iodine test: blue-black 3. Identify each of the samples in Part 1 as monosaccharide‚ disaccharide or polysaccharide. Water = not a saccharide Glucose = monosaccharide Fructose = monosaccharide Galactose = monosaccharide Sucrose = disaccharide Lactose = disaccharide Starch = polysaccharide Honey = primarily monosaccharides with some disaccharide Saccharine = not a saccharide Nutrasweet = not a saccharide Part 1: Benedict’s Test Procedure Place ten drops of
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14.69 | 1 psia‚ pounds per square inch absolute | 6.895 kPa | 1 in | 2.54 x 10-2 m | 1 Pa | 1 N/m2 | 1 cp‚ centipois | 10-3 Pa∙s | 2. The sugar solution is prepared by dissolving 10 kg of sucrose in 90 kg of water. The density of the solution is 1040 kg/m3. Molecular Weight of Sucrose: 342.30 g/mol‚ Water: 18 g/mol. Determine the following‚ f. Concentration‚ weight per unit weight‚ Ans: 0.1 kg solute/kg solvent g. Concentration‚ weight per unit volume‚ Ans: 104 kg solute/m3
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The two factors that we will be testing in this experiments are: Lactase Enzyme and Lactose. Lactase is a protein located in the human small intestine‚ while lactose is a term to define the sugar found in milk. Milk is a substance that contains nutrients necessary for our bodies‚ however‚ some people are unable to consume lactose related products‚ and so they are medically classified as Lactose Intolerants. The purpose of this experiment is to examine and illustrate the way that lactose gets affected
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Carbohydrate: Ethanol from Sucrose * Introduction Ethanol is one of the oldest alcohols and also the least toxic one. Industrially‚ ethanol is made most economically by hydration of ethylene. However‚ ethanol that is intended for human consumption must‚ by law‚ be prepared by fermentation. By either method‚ ethanol‚ of course‚ has the same formula‚ structure‚ and properties. The fermentation takes place with the assistance of enzymes from yeast in 2 steps: first sucrose (a disaccharide whose
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Concentration of Potatoes Lab #1 Purpose: To find the molarity/concentration of potato cytoplasm. Materials: As on page 1 in the lab handout. Procedure: As on page 1 in the lab handout. Data and Observations: Test Tube # | Concentration of sucrose solution (mol/L) | Initial Mass (g) | Final Mass | Percentage change in mass | 1 | 1.0 mol/L | 3.00g | 2.25g | -25.0% | 2 | 0.9 mol/L | 2.70g | 2.07g | -23.3% | 3 | 0.8 mol/L | 2.92g | 2.25g | -22.9% | 4 | 0.7 mol/L | 2.60g | 1.94g | -25.4%
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Five separate dialysis tubes were filled with 10 mL each of tap water‚ 20% sucrose solution‚ 40% sucrose solution‚ 60% sucrose solution and another tap water. The first four bags were then added to 200 mL beakers filled with water. The last dialysis tube was added to a 200 mL beaker of 60% sucrose solution. Over the course of an hour‚ each bag was periodically dried and then weighed for the experiment. The question for the second experiment
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00372 moles hydrochloric acid in 2.39 x 10-2 liters of solution? 0.00372 mol HCL = 0.156 M HCL 2.39x10-2 L soln 4. A flask contains 85.5 g C12H22O11 (sucrose) in 1.00 liters of solution. What is the molarity? 85.5g sucrose x 1 mol sucrose = 0.250 M sucrose
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significant concentrations of ions‚ the ions more between the electrodes to complete the circuit(which includes a light bulb).Tapwater and distilled water are examples of non-electrolytes. A solution of a weakelectrolytes‚ acetic acid (CH3COOH)‚ 5% sucrose solution; it contains low concentrations of ions and so the bulbglows dimly. A solution of a strong electrolyte‚ HCL‚ NaOH‚ NH4CL‚ NaC‚ conc.H2SO4; it contains a highconcentration of ions and so the bulb glows brightly. Introduction
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tubing and then tied of the other end securely leaving room for expansion. Then blotted the tube dry and placed it in the cup labeled “water”. Then we repeated the same process witht eh remaining five pieces of dialysis tubing‚ adding a different sucrose solution to each bag: 0.2 M‚ 0.4 M‚ 0.6 M‚ 0.8 M‚ and 1.0 M. After‚ we then weighed each bag and recored each bag’s initial mass in Table 2. Then filled the six plastic cups approximately ¾ full of distilled water and immersed one bag in each of
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DETERMINATION OF THE WATER POTENTIAL OF POTATO TUBER CELLS. Method. Five sucrose solutions with varying molarity and one control containing distilled water were prepared and poured into test tubes. The potato discs were dried‚ weighed and added to the test tubes. The discs were then weighed again after a period of 24 hours. The percentage change in mass was then calculated. Apparatus.  Specimen tubes with stoppers x6  1cm3 diameter cork borer  razor
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