Survey of the Sciences Unit 4: The Science of Fireworks 7-7-14/7-14-14 What is a firework? An explosive or combustible used for display. In the 19th century the introduction of new ingredients such as magnesium and aluminum greatly heightened the brilliance of such displays. There are two main classes of fireworks‚ force-and-spark and flame. In force and spark compositions‚ potassium nitrate‚ sulfur‚ and finely ground charcoal are used‚ with additional ingredients that produce various types
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CSEC CHEMISTRY NOTES ON PERIODIC TRENDS From Chemistry for CSEC by Tania Chung-Harris and Mike Taylor Chemistry for CAPE by Susan Maraj and Arnold Samai Periodic Trends in Group II Elements in Group II The elements in Group II are called alkaline earth metals. Be‚ Mg‚ Ca‚ Sr‚ Ba‚ Ra Beryllium‚ Magnesium‚ Calcium‚ Strontium‚ Barium‚ Radium These elements bond by metallic bonds (intramolecular forces) to form giant metallic structures. The size of the
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SRI BHAVANI TEXTILE PROCESSING: The plant performs the following operations of wet processing 1. Singeing(Fabric) -Gas Singeing 2. Desizing 3. Mercerisation(Fabric) 4. Scouring and Bleaching 5. Dyeing -Kier boiler -Jigger -Jet dyeing -Beam dyeing 6. Dyeing(yarn) -Cheese dyeing 7. Finishing -Stenter -Zero-Zero -Calendering 8. Printing -Flat bed printing 9. Dot coating DESIZING: Mts=1095 Volume=650 Indent type=non organic Temp=80 Weight=378 Time:
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Shipboard Sanitation is covered in FM 55-501‚ Chapter 2‚ paragraph 64-69. Cleanliness and sanitary conditions are essential since personnel aboard ship live and work in restricted quarters. The health of each crew member is the concern of all aboard‚ as any infection or unhealthy habit can affect the overall health or efficiency of the crew. High sanitary standards must be met to protect the crew from infection and illness. Conditions aboard the ship should include adequate cleaning and laundry
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Harmful Chemicals in our Environment Over the past century humans have introduced a large number of chemical substances into the environment. Some are the waste from industrial and agricultural processes. Some have been designed as structural materials and others have been designed to perform various functions such as healing the sick or killing pests and weeds. Obviously some chemicals are useful but many are toxic and their harm to the environment and our health far outweighs their benefit to
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particle (atom). Particles can join up with other particles of the same type to form molecules. Examples: Hydrogen = H2 . This means there are two atoms of hydrogen joined together to form a molecule of hydrogen gas. Oxygen = O2‚ Nitrogen is H2‚ Chlorine is Cl2. A compound is a pure substance of two or more elements chemically combined together in a set ratio. Example: Water = H20 this means there are always 2 atoms of Hydrogen and 1 atom of Oxygen in every molecule of water. [pic] A Mixture
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tuberculosis‚ diphtheria etc. The process of killing the harmful bacteria by some suitable treatment of water is called STERILIZATION of DISINFECTION OF WATER. The common sterilizer agents are chlorine‚ ozone‚ bleaching powder‚ potassium per magnate chloramines. Sterilization of water through bleaching powder gives chlorine and if it is in excess‚ it is harmful for health and causes diseases like chlorawis‚ unconsciousness etc. So here we determine the exact amount of bleaching powder used of required for
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EN 102 April 7‚ 2013 WWI Paper: Draft One In the poem “Dulce et Decorum Est” written by Wilfred Owen‚ the audience is introduced to the horrifying experience of a gas attack in World War I. Owen goes into excruciating detail on every effect of the gas‚ and describes almost everything about the physical state of the infected‚ dying man. Thousands of soldiers were exposed to gas in the war‚ and unfortunately‚ many of them died from the effects. The first attack that the Germans unleashed on the
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Technologies of World War I Roland Brown HIST102 Dr. Kahan September 21‚ 2014 There have been several technological improvements on the battlefield since the start of the first Great War. Armies set foot in combat zones anticipating offensive victories with the use of their numbers alone. Trench warfare proved these old tactics to be erroneous and obsolete. Complimenting these new approaches to warfare were also new weapons. The development of the machine gun‚ artillery‚ tanks
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PurposeIn this experiment‚ sodium hypochlorite (NaOCl) in acetic acid mixture was used to oxidize emdo-borneol (an alcohol) to camphor (a ketone). The product would then be purified by sublimation and then be analyzed by Infrared spectroscopy and melting point test. Procedure and ObservationsPlease refer to the lab manual and the carbon copy attached. Data and CalculationsWeight of endo-borneol = 0.2013gNo of moles of endo-borneol = 0.2013g/154.25g mol-1 = 1. 305mmolSince one mole of endo-borneol
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