CHEMISTRY TOPIC 11 CHEMICAL CALCULATIONS CHEMICAL CALCULATIONS INTRODUCTION The first part of this ‘Chemical Calculations’ topic will help us to work out QUANTITIES involved in a reaction; For example‚ a manufacturer might want to know‚ How much ammonia will I produce from 20 tonnes of nitrogen in the Haber Process? To do these calculations you will need to be familiar with the term Ar (relative atomic mass)‚ Mr‚ Molar mass and Mole. Relative Atomic
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instructor. obseRvations The color of the flame is expected to be as follows: Metallic ion Flame color Sodium Na+ Yellow/Bright Orange Strontium Sr2+ Red Potassium K+ Light Purple Barium Ba2+ Green Copper Cu2+ Green Lithium Li+ Red Calcium Ca2+ Orange Unknown Red-Strontium Questions A. All chemical used in this test are binary compounds. What portion of the periodic table is responsible for the color observed? The Metals portion B. In cooking over
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the metal + Stem on the nonmetal + the suffix “ide” Formula Name NaCl Sodium chloride CsF Cesium fluoride CaBr2 Calcium bromide MgO Magnesium oxide Li2S Lithium sulfide Al2O3 Aluminum oxide ZnH2 Zinc hydride AgI Silver iodide SrS Strontium sulfide Ca3N2 Calcium nitride K2Te Potassium telluride Na3N Sodium nitride CaC2 Calcium carbide LiH Lithium hydride Mg3P2 Magnesium phosphide Memorize your fixed charge metals!!!! Group 1A‚ 2A‚3A and Al+3‚Zn+2‚ Cd+2 and Ag+1 II. Inorganic Nomenclature
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Fireworks and What Makes Them Go Sparks! Colors! Things that go BOOM! Chemistry doesn’t get much better than this. Ever notice how minutes drag on for hours when you’re waiting for a fireworks show to begin? Everyone’s thinking the same thing: The sky is dark enough the hot dogs are all eaten…come on when are they going to start? Then the first rockets streak into the sky…Ooh! Aah! Yes‚ it was worth the wait. The birthplace of fireworks is generally recognized as China.
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Avoid certain medications like lithium‚ antimalarial drugs‚ inderal‚ and indomethacin. Prevent skin injuries by taking extra precautions to your skin. Avoid infections‚ wash your hands throughout the day‚ don’t share food‚ drinks‚ or eating and drinking utensils‚ and try to avoid sick
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Analyze a global trend and explain the driving forces and/or contributing factors affecting the competition within a specific industry. The world population will increase another 3 billion to 9 billion in 2044 (Figure 1)‚ with the imbalance growing between population numbers and vital life sustaining resources‚ humans must actively conserve cropland‚ freshwater‚ energy‚ and biological resources. Humans need to develop renewable energy resources to reduce the damages of earth resources and diminishes
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formula of a molecule containing 65.5% carbon‚ 5.5% hydrogen‚ and 29.0% oxygen? 2. If the molar mass of the compound in problem 1 is 110 grams/mole‚ what’s the molecular formula? 3. What’s the empirical formula of a molecule containing 18.7% lithium‚ 16.3% carbon‚ and 65.0% oxygen? 4. If the molar mass of the compound in problem 3 is 73.8 grams/mole‚ what’s the molecular formula? Write the molecular formulas of the following compounds: 5. A compound with an empirical formula of C2OH4
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Individual research Paper Claudine Robinson CSNL 526 January 12‚ 2012 Dr. Michelle McGuire Individual research Paper Bipolar Manic Depression Bipolar Disorder is a mental illness that affect between 0.8% and 1.6% of the population that is at least one out of every 100 persons. It affects women as well as men and usually starts somewhere around a person’s teens or late twenties. This particular depression has to do with mood swings and causes people to go from highs/cheerful and blissful
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LSD-25 Synthesis from "Psychedelic Guide to the Preparation of the Eucharist": Preparatory arrangements: Starting material may be any lysergic acid derivative‚ from ergot on rye grain or from culture‚ or morning glory seeds or from synthetic sources. Preparation #1 uses any amide‚ or lysergic acid as starting material. Preparations #2 and #3 must start with lysergic acid only‚ prepared from the amides as follows: 10 g of any lysergic acid amide from various natural sources dissolved in 200 ml of
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and product innovation as a result of years of research. It all started in 1970 when Geoffrey Ballard‚ Keith Prater and Paul Howard agreed to develop a rechargeable and lightweight lithium battery. Although the company’s main product line was the batters‚ the three partners had a vision to produce the rechargeable lithium type. To what extent should spin-off technologies be transformed into stand-alone products? Spin-off technologies should only stand alone in circumstances where goals and visions
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