On April 21st‚ 1876 30-year-old Charles Delauney Turner Bravo was found poisoned in the Priory‚ his home in South London. The ambitious British lawyer had just only married Florence Ricardo (nee Campbell)‚ a wealthy widow five months before his death. On April 18th‚ 1876 Bravo had dinner with his wife and her companion‚ Mrs. Jane Cannon Cox (“Florence Bravo‚” n.d.). After dinner Bravo retreated to his room and a few minutes later‚ Bravo cried out for hot water. The maid and Mrs. Cox rushed to help
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Chapter I INTRODUCTION Plastics found everywhere. Bottles‚ utensils‚ food packagings are some examples of plastics that we use and see in our daily lifestyle. We can easily have plastics for our convience because it was sold in our market directly thus spending a little of our money. Behind these things our typical perception about plastic is just a bit of what plastics really are. For those people who are concious about our environment ‚ they say that plastics cause a wide environmental problem
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he’s attracted to her. He warns her about the personal questions‚ and really does his best to make sure she gets what she wants. Miss Rehana is a beautiful‚ young woman with eyes that are “large and black and shiny enough to not need the help of antimony”‚ and who is engaged to a man in England who her parents set her up with and forced her to marry. When she comes to the embassy‚ not truly wanting to go‚ she
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Chemistry. Paraffin wax was chosen by man for use in candles as man had the knowledge that it would vaporize on heating and a flame will be produced. The basic match-stick was invented 5000 years ago. The modern safety match which is made by a mixture of Antimony Trisulphide‚ Potassium Chloride and Red Phosphorous was developed around 200 years ago. Could have man invented the safety match if he hadn’t had the knowledge of Chemistry? Fertilizers such as Urea‚ Ammonium Sulphate‚ Super Phosphate‚ Potash and
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Naming Chemical Compounds PART A Name the following 1 S Sulfur 2 Sb Antimony 3 N2 Dinitrogen 4 PO43- Phosphate 5 Au Gold 6 Rb Rubidium 7 LiCl Lithium Cloride 8 AlBr3 Aluminum (III) Bromide 9 KMnO4 Potassium Manganate (VII) 10 Cu(OH)2 Copper (II) Hydroxide 11 FeSO4 Iron (II) Sulfate 12 NH4Cl Ammonium Chloride 13 ZnCO3 Zinc Carbonate 14 SnF2 Tin (II)Fluoride 15 MgSO4 Magnesium Sulfate 16 MnO2 Manganese (IV) Oxide 17 Ca3(PO4)2 Tricalcium Phosphate 18 NaOH Sodium Hydroxide
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P. Cooke) found that these types of chemical relationships extended beyond the triad. During this time fluorine was added to the halogen group; oxygen‚ sulfur‚selenium and tellurium were grouped into a family while nitrogen‚ phosphorus‚ arsenic‚ antimony‚ and bismuth were classified as another. Unfortunately‚ research in this area was hampered by the fact that accurate values of were not
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spark compositions‚ potassium nitrate‚ sulfur‚ and finely ground charcoal are used‚ with additional ingredients that produce various types of sparks. In flame compositions‚ such as the stars that shoot out of rockets‚ potassium nitrate‚ salts of antimony‚ and sulfur maybe be used. For colored fire‚ potassium chlorate or potassium perchlorate is combined with a metal salt that determines the color. Inside each firework are small packets filled with chemicals‚ mainly metal salts and metal oxides
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Elements classified as Metalloids have properties of both metals and non-metals. Some are semi-conductors and can carry an electrical charge making them useful in calculators and computers The Metalloids are: Boron Silicon Germanium Arsenic Antimony Tellurium Polonium Elements classified as Alkali Metals The 6 elements classified as "Alkali Metals" are located in Group 1 elements of the Periodic Table. Elements classified as Alkali Metals are very reactive metals that do not occur freely
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osmium or magnesium? 21. Used to disinfect water: boron or chlorine? 22. Compounds of this are used in toothpaste: lithium or fluorine? 23. Named after the inventor of dynamite: lawrencium or nobelium? 24. Has higher ionization energy: antimony or bismuth? 25. Is smaller in radius: scandium or calcium?
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The Renaissance was a time of rebirth in Europe. During this time period‚ many different inventions were made and there were many different advancements in math and science. One important invention that was made during this time of rebirth was the printing press with moveable type. The printing press was a revolutionary invention that an inventor named Johann Gutenberg created. Using the printing press‚ multiple pages could be printed at once and learning spread faster than ever before. Also‚ with
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