you spread salt daily on your driveway to melt the snow. In the springtime‚ when the lawn begins to grow‚ you notice that there is no grass growing for about 3 inches from the driveway. Furthermore‚ the grass seems to be growing more slowly up to about 1 foot from the driveway. Can salt have an effect on the growth of grass after placing it in your driveway during the winter to melt the snow? I will perform three different experiments to find the conclusion to this problem. Salt is a Corrosive
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Lee) (Sarina Dolch) SBI 3UI Mr. Vrabec October 20‚ 2009 Test #1 * Add a small piece of cracker in test tube #1 and add Lugol’s solution. Observation #1 * The cracker turned a black colour when the Lugol’s solution was added to it. This was a positive result‚ meaning that the cracker contains starch. Test #2 * Add a bigger piece of cracker in test tube #2‚ add 5 mL of Benedict’s solution‚ place in a boiling water bath‚ and record observations after 5 minutes. Observation #2
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Investigation of a Hydrated Salt Table of Calculations: ³ Unknown #2 Weight of hydrate before heating .9989g Weight hydrate after heating .6534g Weight of water .3455g Mole of water in hydrate .0192mol Mole of anhydrous salt: CuSO4 .004094mol CuCl2 .004859mol CoCl2 .005033mol Mole ratio of water to each of the anhydrous salts: CuSO4 4.69
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Exercise DP.1: Estimating Pure Component Properties in Hysys Workshop Report Requirements: 1. Create a graph of the vapor pressure in psia of cyclohexanol‚ cyclohexanol and high boiler as a function of temperature from 50 to 450 F. Print and submit these graphs. 2. Compare the pure component critical properties ( Critical Temperature‚ Critical Pressure) given in the design problem statement against the values used by Hysys. ( To view properties of a component‚ View the Basis Environment
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New Analysis Part 2 Essay: Should You Make Or Should You Buy? Outsourcing Hotel Operations Recently When an entrepreneur wants to join the hotel industry‚ he can search for a property company for a building for lease to operate his hotel rather than to build it by his capital. Nowadays‚ there are so many hotel chain do not own the buildings which contribute the hotels‚ such as Choice Hotels International company‚ which own 11 hotel brands: Comfort Inn‚ Comfort Suites‚
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Does cleaning a table tennis racket and keeping it in a case preserve its power and spin? Introduction: Spin plays a large part in most‚ if not all‚ ball sports. In no sport is the Magnus Effect more conspicuous than in the sport of table tennis. The small‚ light ball can spin up to 150 revolutions per second in a match situation. (Qun‚ et al.‚ 1992) This is due largely to technique‚ but the level of spin has greatly improved since the 1950’s‚ due to the invent of “sandwich rubber”‚ or “Inverted
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SOLUTIONS TO HOMEWORK 1 1.2. a. The ten elements are the ten cars b. 5 variables: Size‚ Cylinders‚ City MPG‚ Highway MPG‚ and Fuel c. Categorical variables: Size and Fuel Quantitative variables: Cylinders‚ City MPG‚ and Highway MPG 1.3. a. Average mpg for city driving = 182/10 = 18.2 mpg b. Average mpg for highway driving = 261/10 = 26.1 mpg On average‚ the miles per gallon for highway driving is 26.1 – 18.2 = 7.9 mpg greater compared to city driving. 2.47. a. (Other possible stem-and-leafs
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Hazard identification Risk management Risk control Activities Hazard EFFECT Likelihood Severity Risk Recommended 1. Construction wastes are not being managed well Step on the wastes Feet injuries 4 3 11 Construction wastes should be manage and well and place out of workplace 2. using cellphone while handling construction vehicle Someone being cought in front of the vehicles without the worker knowing Serious injuries‚ fatal 4 3 12 Employer have to make sure workers are following safe work procedures
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AIM The aim of this investigation is to explore the effect of different concentrations of bile salts on the time taken for the lipase enzyme to break down fat. BILE Bile is a brownish bitter alkaline fluid produced by the liver and made by the hepatocytes from water‚ bile salts‚ bile pigments cholesterol and phospholipids and stored in the gall bladder. Bile is directly connected with digestion. It is released sporadically into the small intestine (duodenum) which is part of the gut in order
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Written Assignment 2: Reading a Table Download a word document of this assignment. Read pages 38 to 39. Use the information from the table to answer the questions. Do all your work on the downloaded assignment and submit as a word document in Moodle. Due 5/30 by 11:55pm. No Extensions Median Earnings Based on U.S. Population 25 Years and Over Educational Attainment Male Female Total population 25 years and over $40‚839 $28‚009 Less than high school graduate $22‚956 $14‚341 High school graduate (includes
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