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    lab report

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    with violent flame and extinguished within 8 second as the glowing splinter is inserted . . 2 Boiled liver (cooled) No effervescence is produced . No changes occur No sound is heard . The glowing splinter is extinguished as the glowing splinter is inserted . 3 Pulped liver High density of effervescence is produced vigorously . Pop sound is heard .The glowing splinter is ignited with spark and violent flame and extinguished within 18 second . When the glowing splinter is pulled out ‚ it

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    With the second clean pipette add maltose solution up to the 0.5 line of the maltose tube. With the third clean pipette‚ add lactase solution to each tube‚ until the level of mixture in each tube comes up to the 1.0 line of the tube. Place both tubes in the 40 degrees celsius water bath and incubate them for 10 minutes. The other thing needed is glucose strips. After the tubes have been incubated for 10 minutes‚ place a glucose strip in each tube for one second. Let it sit for thirty seconds‚ then compare

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    References: http://webs.mn.catholic.edu.au/physics/emery/measurement.htm#Measurement http://www.digipac.ca/chemical/sigfigs/experimental_errors.htm http://www.tsb.gc.ca/eng/rapports-reports/rail/2011/r11v0057/r11v0057.pdf

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    phase (60 trials) in which participants were asked to process words (5-7 letters in length) to different depths by answering (yes/ no) to various questions about the words (typeface (upper/lower)‚ phonemics and meaning)‚ all presented for 200ms. The second phase was a surprised memory phase (120 trials) that measured the proportion of yes responses between 60 ‘old’ words and the 60 ‘new’ words. ‘Old’ words referring to words seen before (first phase) and ‘new’ referring to words that haven’t been seen

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    Research Question How will the addition of different pH buffers to amylase affect the rate of starch digestion measured using starch and iodine? Introduction Amylase is an enzyme found in human saliva and pancreas. It is the digestive enzyme that is needed to breakdown starch molecules. Amylase must be kept at certain conditions to function at its optimum level. This experiment will explore the effect of pH (1‚ 4‚ 7‚ 10‚ and 14) on the function of amylase by using starch and iodine. Usually

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    put the mealworms into the tube. Put another piece of cotton behind the mealworms. The cotton has to be loose enough so that air can pass through‚ but tight enough that the mealworms cannot pass through. Put another small piece of cotton behind the second piece and leave about 2cm in between it and another piece

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    lab reports

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    3-difluorobenzene) 3) The absorbance of a 0.0816 M solution of a molecule is measured using a 1.000 cm pathlength cuvette. Two peaks are observed in the spectrum‚ one at  = 317 nm (A = 0.1286)‚ the other at  = 284 nm (A = 0.7215). Assuming Beer’s law holds A = ac (3.1) what are the values for %T (percent transmission) and a (absorption coefficient‚ in units of L/mol.cm) for the molecule at the above two wavelengths? Also do the following from Atkins. Exercise 9.16b Estimate

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    City University of Hong Kong Dept. of Physics & Materials Science AP2104 Mechanics of Solids Laboratory Manual Experiment 1 Pure Bending of a Beam Experiment 2 Torsional Deformations Experiment 3 Yield Criteria for Ductile Materials under Plane Stresses Experiment 1 Pure Bending of a Beam Objective 1. To examine the stresses at various positions of the beam under a constant load of pure bending. 2. To determine the curvature of deflection of the beam. Introduction

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    Helmut Newton

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    NEWTON HELMUT because of the threat of the Nazis. This turned out to be a gift to the world because it eventually gave him the freedom to pursue his now legendary career in photography. HELMUT NEWTON was born in Germany and later forced out of the country We see a lot of sexy photos of women in today’s magazines‚ most of them designed only to titillate and excite men‚ having no artistic message that goes beyond “I am sexy”. In the fashion photography world‚ however‚ there is one man

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    Synthesis of Butyl Benzoate Using Phase Transfer Catalysis The objective of the experiment is to synthesize the butly benzoate by nucleophilic substitution and characterize it by IR spectroscopy. The percent yield of the final product is determined after the synthesis. Procedures: 2.0 mL of 1-bromobutane‚ 3.0 g of sodium benzoate‚ 5.0 mL of water‚ 4 drops of Aliquat 336‚ and a boiling stone were placed in a 50mL round-bottomed flask. The reaction mixture was refluxed for 1 hour and the flask

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