Get the Facts About the Element Antimony

Antimony (atomic number 51)Â  compounds have been known since ancient time. The metal has been known since at least the 17th century. Electron Configuration: [Kr] 5s2 4d10 5p3 Word Origin Greek anti- plus monos, meaning a metal not found alone. The symbol comes from the mineral stibnite. Properties The melting point of antimony is 630.74Â °C, the boiling point is 1950Â °C, specific gravity is 6.691 (at 20Â °C), with a valence of 0, -3, 3, or 5. Two allotropic forms of antimony exist; the usual stable metallic form and the amorphous gray form. Metallic antimony is extremely brittle. It is a bluish-white metal with a flaky crystalline texture and metallic luster. It is not oxidized by air at room temperature. However, it will burn brilliantly when heated, and release white Sb2O3 fumes. It is a poor heat or electrical conductor. Antimony metal has a hardness of 3 to 3.5. Uses Antimony is widely used in alloying to increase hardness and mechanical strength. Antimony is used in the semiconductor industry for infrared detectors, Hall-effect devices, and diodes. The metal and its compounds also used in batteries, bullets, cable sheathing, flame-proofing compounds, glass, ceramics, paints, and pottery. Tartar emetic has been used in medicine. Antimony and many of its compounds are toxic. Sources Antimony is found in over 100 minerals. Sometimes it occurs in native form, but it is more common as the sulfide stibnite (Sb2S3) and as the antimonides of heavy metals and as oxides. Element Classification and Properties SemimetallicDensity (g/cc): 6.691Melting Point (K): 903.9Boiling Point (K): 1908Appearance: hard, silvery-white, brittle semi-metalAtomic Radius (pm): 159Atomic Volume (cc/mol): 18.4Covalent Radius (pm): 140Ionic Radius: 62 (6e) 245 (-3)Specific Heat (20Â °C J/g mol): 0.205Fusion Heat (kJ/mol): 20.08Evaporation Heat (kJ/mol): 195.2Debye Temperature (K): 200.00Pauling Negativity Number: 2.05First Ionizing Energy (kJ/mol): 833.3Oxidation States: 5, 3, -2Lattice Structure: RhombohedralLattice Constant (Ã…): 4.510 Symbol Sb Atomic Weight 121.760 References Los Alamos National Laboratory (2001)Crescent Chemical Company (2001)Langes Handbook of Chemistry (1952)CRC Handbook of Chemistry Physics (18th Ed.)

The Beach Literary Analysis Paper - 776 Words

The Beach by Alex Garland Analysis Paper There are some travelers who see a â€Å"paradise† as their final destination; however, it may end up to be exactly opposite of what a paradise should be. This can be seen in Alex Garland’s The Beach. The novel is about several backpackers, Richard, Francoise, and Etienne, who come together and travel to an island community, their paradise, within Thailand. Ultimately, the story portrays the idea of a utopia-like society taking a turn for the worst and becoming a dystopia, something that the backpackers would not have expected. Throughout the story, the theme of a utopia turning into a dystopia could be seen through symbolism such as the â€Å"cancer† of traveling and the destruction that it brings. â€Å"I†¦show more content†¦Along the way, Richard left behind instructions on how to get to the island for Americans that they met along the way. Mainly because it is in a secure area, it can be inferred that someth ing bad will eventually happen on the islands, thus creating a clear image of how the cancer spreads. The spread of this cancer initially starts when Daffy shares the secret beach with Richard and his friends, who later shares it with other travelers. By the time they arrive on the island, Richard, Etienne, and Francois discover that the beach is right next to another island with fields that cultivate marijuana which can also foreshadows negative events to happen. For a while life on the island started out perfect, like a true utopian society as Richard states â€Å"‘You fish, swim, eat, laze around, and everyone s so friendly. It s such simple stuff, but... If I could stop the world and restart life, put the clock back, I think I d restart it like this. For everyone.’† (Beach 106.) However, right when life on the beach paradise started to seem perfect, a chain of unfortunate events began to occur. 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Best School Lunch Sicilian Broccoli and Cauliflower Pasta free essay sample

My favorite place in Napa, California isn?t a twenty-star restaurant, it isn?t an artisan olive oil producer, and it isn?t a tasting room with a penchant for terroir-specific local wines. My favorite place in Napa is  The Oxbow School. It is a small, semester-long boarding program for high school students combining hard-core interdisciplinary academics with the study of visual arts. In addition to top-flight academics, the school nourishes creativity through a kitchen, headed by chef Tracy Bates, that prepares food to rival many of the schools pedigreed Napa neighbors.I stumbled onto the Oxbow School (just before their first class arrived) five or so years ago and have been peripherally involved with it ever since. In my mid-twenties, I worked on quite a few projects in the teen publishing space and and wanted to stay involved with teens (even if it wasn?t on a professional level) moving forward. We will write a custom essay sample on Best School Lunch: Sicilian Broccoli and Cauliflower Pasta or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page So, in regards to the school I help out whenever I can ? photography, tech support, fundraisers, whatever?One of the perks of visiting the school is that I get to share lunch or dinner with the staff and students, prepared by Tracy and her hard-working kitchen staff.I?ve been itching to write about Oxbow for a long time and was waiting for the perfect opportunity. When I was contacted about giving an  Independent Food Festival Award  this year, I figured there would be no better time to recognize Tracy and the Oxbow School for:  Best School Lunch.   Read more about my favourite dish Ill also take this opportunity to tell you a little bit more about the school, the food, the philosophy, and how it all ties together into one unique and progressive place.The Oxbow School sits at a bend in the Napa River a short walk from downtown Napa, and a stones throw from the  COPIA  center. Not only does Oxbow have one of the most progressive and demanding curriculums Ive seen, it re ally tries to look at students as individuals and whole people ? and a nutritious, delicious, and varied meal plan is a big part of that.The chef: Tracy is a woman close to my own heart. Not every school is blessed with a chef coming from Chez Panisse. Tracy made the jump from the restaurant industry to Oxbow and has used her skills from the start to develop ways to expose and teach each class of students about the importance of good, simple, and thoughtfully-prepared food. Her kitchen embodies the philosophy that there are delicious alternatives to fast food. Her offerings are constantly exploring the idea that eating fresh, seasonal food doesnt mean brown rice, blah steamed vegetables, bark and twigs. There is always a vegetarian (or vegan) option, and they like to mix things up a bit with crowd-pleasing favorites interspersed with a few more exotic offerings thoughout the course of a semester. For example: Mac+Cheese and Aloo Gobi, just not at the same meal. She and I are in agreement that hands-down, there is no better way to change minds or eating habits than to feed someone a delicious alternative to fast or over-processed foods. What I love about the food at Oxbow is that it is fresh, seasonal, unfussy, and family-style. The newly restored dining hall is bright and casual with big tall ceilings, amazing art on the walls, and it is a perfect place to enjoy a meal whether you are a student or adult ? it?s just a nice environment to be in.The Oxbow garden, just outside the kitchen window supplies fresh produce and ingredients for meals. The students can participate in planting, weeding, and harvesting each week if they are interested. The garden is able to supply everything from greens (both cooking and salad), potatoes, and tomatoes to herbs, garlic, and the last time I was up I noticed a variety of freshly planted citrus trees.The students can also participate in the kitchen as a co-curricular activity twice a week, where they might do things like: work on knife skills, make marinara sauce (learn to work without a recipe), make ginger cake (learn how to work WITH a recipe), comparative tastings (i.e. olive oils). All activities working towards instilling a sense of respect for the food they are preparing, knowing what they are eating and where it comes from, and kitchen safety and sanitation.The Oxbow School is a rare and unique place. Unfortunately there aren?t more schools out there like it. If you are interested in getting more information about the school, or know a young person who might enjoy and benefit from a semester at Oxbow, take a look at  their website.Tracy was nice enough to give me this favorite Oxbow recipe. She says it is surprising because you would think it is a dish that students might not like but they do. Its got savory, spicy, sweet, and earthy going on all at once. They serve it with a side of pan-fried chicken, but it makes a great entrà ©e on its own for the vegetarians. A word of caution, this is a BIG batch. We enjoyed leftovers for days ? but for smaller households you might consider cutting the recipe in half. Thanks to Tracy and the Oxbow kitchen staff for a tasty recipe. I would love to see a cookbook of all the favorite Oxbow recipes sometime down the line I would be the first one to buy it.