How Credit Cards Work Have you ever stood behind someone in line at the store and watched him shuffle through a stack of what must be at least 10 credit cards? Consumers with this many cards are still in the minority‚ but experts say that the majority of U.S. citizens have at least one credit card -- and usually two or three. It’s true that credit cards have become important sources of identification -- if you want to rent a car‚ for example‚ you really need a major credit card. And used wisely
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Visual Art Home Work Essay Artist has a variety of tools and equipment in order for them to make their art works‚ this can affect their practice and what makes them different to the other entire artist in the world. Many don’t have to use any tool at all and use what is seen and what is given; they use the environment to manipulate the surrounding. Such as the Artist by the name of Andy Goldsworthy‚ he is a British sculptor‚ photographer and environmentalist producing site-specific sculpture
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Soviet Society. The dissident Russian historian‚ Roy Medvedev (whose own father was killed in the purges) summarises this point‚ saying‚ “People saw enemies everywhere‚ enemies who wanted to destroy the revolution and diminish the results of their hard work &accomplishments‚ and this only increased tension within society”. The purges deceived the general public and spread paranoia amongst the people‚ who thought the ideals of the revolution for which they had fought so hard‚ would collapse if they did
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Question 1 Electromagnetic radiation behaves both as particles (called photons) and as waves. Wavelength () and frequency () are related according to the equation where is the speed of light (). The energy ( in joules) contained in one quantum of electromagnetic radiation is described by the equation where is Planck’s constant (). Note that frequency has units of inverse seconds ()‚ which are more commonly expressed as hertz (). Part A A microwave oven operates at 2.40 . What is the wavelength
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Nuclear Chemistry Nuclear science is the study of sub-atomic particles and their function in various subjects. A nucleon is the collective name for the two components of the atomic nucleus: the neutron and the proton. Isotopes are any of the different forms of an element each having different mass numbers‚ which give the total number of nucleons. The major fundamentals of nuclear chemistry include radioactive decay‚ the nature of fission and fusion‚ and mass defect. The decomposition of the
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Module 4: 10. Strong Bases: NaOH‚ KOH‚ Na2CO3‚ NaHCO3‚ Na3PO4‚ NaHPO4‚ Strong Acids: Fe(NO3)3‚ HCL‚ HNO3‚ Al(NO3)3‚ NiCl2‚ H2SO4 11. Acidic Neutral Basic NaCl KNO3 NaOH HC2H3O2 Na2CO3 NaC2H3O2 NaHCO3 Fe(NO3)3 NaNO3 Na3PO4 HCl MgSO4 KOH HNO3 Na2SO4 NaHPO4 CuSO4 NaNO2 CoCl2 Al(NO3)3 NiCl2 H2SO4 KCl NH4Cl 12. CuSO4 CuCO3.Cu(OH)2(s) + 2 H2SO4(aq) ----> 2 CuSO4(aq) + CO2(g) + 3 H2O(l) Na3PO4 Na3PO4 (aq) + 3H2O (l) --> H3PO4 (aq) + 3NaOH
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+ charge on the carbon it was attached to‚ and a tertiary carbocation is the most stable. Another important requirement for a Sn1 reaction is a weak nucleophile attack group. Hydrochloric acid is a weak group because it has no negative charge‚ and works well for the reaction. Reaction for formation of 2-chloro-2-methylbutane The goal of this experiment was to form 2-chloro-2-methylbutane by addition of HCl‚ causing a Sn1 reaction to occur. Chemical Reactions Safety 1. Full
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gifts of chemistry are a boon to mankind. Its applications in home and industry are many. Right from purified drinking water and motor car to cane sugar and mobile phone‚ all these have been made possible only through processes in chemistry at some stage or other of production. New discoveries‚ processes‚ and products are an integral part of this fascinating discipline. It offers a fertile ground for those endowed with intellectual curiosity and a passion for scientific research. you must be knowing
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I am an experienced‚ high-achieving police supervisor in his 29th year at the HCSO with a solid formal education consisting of a B.S. in Law Enforcement and Police Science from Sam Houston State University and comprehensive technical training background. I am prepared to lead our department in any area. _________________________________CAREER SUMMARY________________________________ CAPTAIN 1200 Jail Commander: Currently serving as the Jail Commander leading 7 Lieutenants‚ 35 Sergeants‚ 385 Deputies
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is usually caused by fertiliser run off and dumping of sewage going into waterways (basically human activity). Algal bloom is the direct result of eutrophication where suffocation of aquatic life and nutrient depletion may occur. Professionals may use a colorimetric analysis to measure the absorption of light from coloured water sample using a colorimeter to determine the concentration of nitrate and phosphate present. An acid base titration can also convert nitrogen into ammonia to examine the result
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