Chemistry 59 – 110‚ Winter Term 2013 Lectures: Section 1‚ Tues.‚ Thurs.‚ 1:00 – 2:20; Room‚ 1101 Education Section 2‚ Tues.‚ Thurs.‚ 10:00 – 11:20; Room‚ 102 Toldo Professor: Dr. K.E. Taylor‚ office EH 262; tel. 519-253-3000‚ ext. 5031; e-mail: taylor@uwindsor.ca. Office hours: 4 per week‚ tentatively 3:00 – 5:00 Tues.‚ Thurs. Lab Co-ordinator (office EH 175): Ms. Tina Lepine‚ tel. ext. 3547; e-mail: tlepine@uwindsor.ca. Evening Lab Supervisor (EH 175): Ms. Nedhal
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Chemistry 121 Colligative Properties Lab Demonstration of Selected Calculations from Choice I Determination of Kf for Naphthalene To determine the Kf for naphthalene‚ we need to find the difference in the freezing point of pure naphthalene and the solution of 1‚4-dichlorobenzene in naphthalene. Let’s say that we did this experiment‚ used 1.00 g 1‚4-dichlorobenzene in 10.00 g naphthalene‚ and found that the freezing temperature of pure naphthalene was 78.2°C‚ while that of the solution was 75
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reactants used and the amounts of products formed in a chemical reaction”. Basically‚ Stoichiometry is the science of counting and studying the relationship between the amounts of the reactants to the product. To think of stoichiometry outside of chemistry‚ imagine a bookshelf. To assemble the bookshelf you may need 3 planks of wood‚ 1 giant plank of wood‚ and 20 nails. Even though the amount of the reactants is high‚ the product would be only one bookshelf. Stoichiometry is basically studying the
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The chemistry of life Cell chemistry is hierarchical Inorganic precursors Small organic molecules Macromolecules Supramolecular structures Organelles/structures Cell BIO 1140 – SLIDE 1 Review of macromolecules Carbohydrates Polymers of monosaccharides (polysaccharides) Energy storage Structural chitin starch glycogen Purple pages F23 cellulose BIO 1140 – SLIDE 2 http://www.mpie.de/index.php?id=2957 Monosaccharides CnH2nOn n = 3 to 7 Trioses‚ pentoses and hexoses
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The chemistry of hairspray What is hairspray: introduction Hair spray (or hair lacquer) is a common household aqueous solution that is used to keep hair stiff or in a certain style. Weaker than hair gel‚ hair wax‚ or glue‚ it is sprayed to hold styles for a short period of time. Using a pump or aerosol spray nozzle it sprays evenly over the hair. Hairspray was first developed and manufactured in 1948 by Chase Products Company‚ based in Broadview‚ Illinois.Its active ingredient is a suitable
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dissolved oxygen. • Increase metabolism which would increase oxygen demand‚ and this would lead to decreasing oxygen supply. • Fish eggs don’t hatch. • Migration and spawning would be set off at the wrong time due to false temperature cues. • Sudden change in temperature would kill off fish eggs even if the temperature is in the egg’s survival range. 3. Identify the sources of pollution which accompany the combustion of organic compounds and explain how these can be avoided. (6 marks) Carbon dioxide
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English Paper Two Tips 1. Look at past questions and use them to break down your texts for revision If you look through past paper questions‚ you’ll spot that the sorts of questions you receive will always be about generalised things. Off the top of my head‚ things like Setting‚ Character‚ Beginnings and Endings‚ Death‚ Love‚ Chronology etc. all tend to crop up with reassuring regularity. So‚ this is the way in which you should approach your texts when revising them. Remember that in the actual
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Chemistry of Fireworks By Anuradha Sahu Everyone enjoys the amazing firework shows on the Fourth of July with the beautiful vibrant colors and sparks every year. Fireworks have been part of this world for a very long time. They have been used for enjoyment and for signalling purposes. Every culture has their own significance and use of fireworks. But all fireworks have something in common; the chemistry that makes them work. No matter where you find them‚ they are made up of the same compounds
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Hanna Rich 2/25/14 Chemistry 1110 Chemistry in the News Wireless Cardiac Defibrillator The heart is an incredible muscle. Unlike the brain where a person can continue to be “alive” without any electrical activity‚ without a heartbeat‚ a person cannot live. The average person doesn’t ever think about how or why their hearts lub dub every minute of every day until they die. For someone whose heart doesn’t beat properly‚ the lub dub is a frequent worry. Brandon England is one of those people
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I Term Exam Chemistry Project Sunday‚ January 13‚ 2013 Grade/Section: Date: Question I: State whether each statement is true or false‚ then correct each incorrect statement. (7pts‚ 1 point each) 1- An Element is a substance that can be broken down into simpler substance by chemical means. 2- The Aufbau Principle states that energy levels must be filled from the highest to the lowest‚ when writing the election configuration. 3- Atomic radius decreases across a period
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