The University of the West Indies (Mona) Department of Chemistry Preliminary Chemistry A (Chem 0901) Atomic Structure: Tutorial 2 For discussion in the week beginning September 24‚ 2012. Answers should be submitted by 9:00 am on Monday September 24‚ 2012 in the box provided. Please write your ID number and Laboratory day clearly on your script. 1. Give an expression for the Balmer-Rydberg equation in terms of wavelength λ‚ the Rydberg constant R‚ and the integers m and n where m < n.
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the way teachers would like them to behave. The second misconception is that one person can directly motivate another. This view is inaccurate because motivation comes from within a person. What you can do‚ with the help of the various motivation theories discussed in this chapter‚ is create the circumstances that influence students to do what you want them to do. Many factors determine whether the students in your classes will be motivated or not motivated to learn. You should not be surprised to
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This investigation will explore the question: To what extent was President Truman’s decision to the drop atomic bomb to save lives and hasten the end of World War Two? The pressures and outcomes of dropping the explosive on Hiroshima and Nagasaki in 1945‚ will be the focus of this investigation. The first source is Thomas Holmes article‚ “The Dropping of the Atomic Bombs on Japan”‚ published in 2005 in the United States. The origin is valuable because Holmes is an American historian and social studies
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ATOMIC PHYSICS The nuclear atom All matter is made up of atoms which consist of a central nucleus‚ surrounded by electrons. Inside the nucleus are protons and neutrons. Particle Relative mass Charge Location Proton 1840 + Nucleus Neutron 1840 0 Nucleus Electron 1 - Outside nucleus Proton or atomic number (Z) This is the total number of protons in the nucleus of an atom. Nucleon or mass number (A) This is the total number of protons and neutrons in the nucleus of an atom. Note: a nucleon
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of six individuals that survived the atomic bomb of 1945. Without this book one could not truly determine if what we did to the Japanese was justified or not. We can also look at the way the journalism shapes our out look on things. This is why we always need to look at all the facts before we truly make up our mind on a subject. The book Hiroshima was a great story that was told through a third party perspective in order to explain the horrors of the atomic bomb. A few of the individuals duplicated
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Progress of the Atomic structure Different theories about the atomic structure were introduced over time. These theories changed as a result of development of different experiments. Leucippus was the first to introduce the theory of atomism‚ however he didn’t write about his theories in detail. However‚ Democritus‚ his student wrote about the theory of atoms in detail. He theorised that everything was composed of atoms and that atoms are solid and indestructible. He also had a theory that there’s
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The effects of the atomic bomb were terrible. There’s no doubt in my mind that the atomic bombs dropped on Hiroshima and Nagasaki were a costly mistake. Atomic bombs produce heat millions of degrees high‚ and visible ultraviolet and inferred rays.(Lapp 844) Everyone and everything exposed to their blast is affected. No one is left untouched‚ whether it be emotional or physical; in many cases both. However‚ many members of the science community argue that the atomic bomb was a great advance in technology
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The development of the atomic bomb and chemical warfare forever changed the way people saw the world. It was a landmark in time for which there was no turning back. The constant balancing of the nuclear super powers kept the whole of humankind on the brink of atomic Armageddon. Fear of nuclear winter and the uncertainty of radiation created its own form of a cultural epidemic in the United States. During these tense times in human history officials made controversial decisions such as the bombings
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2012 Historical Development of Atomic Structure Over the many years of the world’s history‚ there have been numerous developments and discoveries pertaining to atomic structure. Each of these breakthroughs gradually led us—step by step—to a deeper understanding of what makes up each and every atom. Because of this‚ our perception of an atom’s structure today is vastly different from the first idea of an atom’s structure from many centuries ago. From Dalton’s theory that all atoms were spherical
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Isotopes‚ sub-atomic particles and relative atomic mass Sub-atomic particles A subatomic particle is a particle smaller than an atom: it may be elementary or composite. In 1905‚ Albert Einstein demonstrated the physical reality of the photons‚ hypothesized by Max Planck in 1900‚ in order to solve the problem of black body radiation in thermodynamics. In 1874‚ G. Johnstone Stoney postulated a minimum unit of electrical charge‚ for which he suggested the name electron in 1891. In 1897‚ J. J. Thomson confirmed
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