Assignment: Atomic Theory 1. Write the complete symbol and determine the no. of electrons‚ protons and neutrons of the following e- p+ n a.) Oxygen - 8 8 b.) Cesium - 55 55 c.) Argon - 18 18 d.) Uranium - 92 92 e.) Copper - 29 29 2. Calculate the atomic mass of sulfur from its natural isotope. f.) Sulfur-36 g.) Sulfur-32 h.) Sulfur-33 i.) Sulfur-34 3. Complete this table. Symbol of Elements | Atomic Number | Atomic Mass | #
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Atomic Theory Essay We are first going to talk about Protons‚Neutrons and Electrons. These three elements are a very good example of most things that are in use of gas fumes. It all started when Protons and neutrons where‚ Protons were discovered by Experimenting with discharging tubes. Eventually they found out the rest of the Atoms over time. Which brings me into the word of Orbital. Orbital is a Neutron‚ electron or a proton Going around a single atom with certain amounts of energy levels. Which
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ATOMIC THEORIES AND HISTORY * Democritus (Greek) - “atomus” meaning indivicible * Indivisible particles called atoms * John Dalton – MODERN ATOMIC THEORY: 1. All matter is made of tiny‚ indestructible particles called atoms (Democritus) 2. All atoms of a given element are identical (not accepted today bc isotopes) 3. Atoms are neither created nor destroyed in chemical reactions (Lavoisier) 4. Atoms of different elements form compounds in whole number ratios (Proust)
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Bath Bombs Lab Bath Bombs Lab – Orange Octyl Ethanoate (C10H20O2) Materials Lab apron Test-tube rack Goggles 500 mL beaker 1 mL Octanol Hot plate 1 mL Ethanoic acid Pipet and bulb Graduated Cylinder Evaporating dish 2 mL concentrate H2SO4 2 test tubes Procedure – Preparing the ester 1. A hot-water bath was prepared by filling a 500 mL beaker with water and heating it carefully on a hot plate until it came
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the atomic bombs. By doing this‚ there would be many benefits‚ but also some very harsh consequences. The atomic bombs were necessary to end the war because they allowed the US shut things down quickly‚ they assisted the US with showing it’s power‚ and it helped get justice for the soldiers that have already lost their lives fighting for their country. The main reason the US felt the need to drop the atomic bomb was because it was crucial for them to end this war once and for all. The atomic bombs
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had every right to drop the Atomic bomb on Japan and therefore force them to surrender. The Japanese had at that time‚ already lost quite a lot of battles against the US and were forced to retreat back to Japan. Yet‚ the Japanese borders were heavily fortified. Had the Americans attacked Japan‚ they estimated their losses to be about 500 000 men. By dropping the atomic bomb‚ an estimated number of 100 000 people died. So in the end you can see that dropping the atomic bomb has saved quite a lot of
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Determination of the Resonance Stabilization Energy of Benzene Using Bomb Calorimetry Kaitlynn‚ Jesse ‚ Belinda Truman State University Abstract The resonance stabilization energy of benzene is investigated by the combustion of cyclododecatriene. The heat of combustion for cyclododecatriene was determined using bomb calorimetry and used to solve for the stabilization energy of benzene. The bond stabilization energy of benzene is found to be 167.6 ± 388
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The Rutherford Model of the Atom 1. In 1911 Rutherford proposed the nuclear model of atomic structure. He suggested that an atom consists of a central nucleus (where most of the mass of the atom is concentrated) having a positive charge‚ surrounded by moving electrons carrying negative charge. Geiger and Marsden carried out an experiment to verify his proposal. The Geiger/Marsden a Particle Scattering Experiment 1. The apparatus is illustrated in the diagram below. | 2. The apparatus
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Cited: Alexander‚ Harriet. Boston bomb: Reddit apologises for identifying wrong suspects. Vers. Web. 23 4 2013. 30 4 2013. Brenner‚ Lisa. Boston Marathon bombings Rumor Control: Man on the roof‚ ’false flag‚ ’ American Airlines‚ Family Guy‚ JFK Library‚ more. Vers. Web. 16 4 2013. 30 4
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Hiroshima: Was Dropping the Atomic Bomb a Military Necessity? On the morning of August 6th‚ 1945 at around 8:16 a.m.‚ the United States dropped the first bomb on Hiroshima. This bomb was given the nickname “Little Boy.” Three days after the first atomic bomb was dropped‚ on August 9th‚ 1945 at around 11:02 a.m.‚ the United States dropped a second atomic bomb on Nagasaki. This bomb was given the nickname “Fat Man.” These two bombs immensely destroyed these cities and took the lives of many people
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