Doctor is a noble job that is admired by a lot of people. Being a doctor itself has place the doctor to the eye of the society in a very good way. However‚ being a doctor can be really risky and a lot of things need to be sacrificed in order to fulfill the task as a doctor. There are several things that motivate me to become a doctor such as to fulfill my late father’s dream for me to become a doctor‚ my own way to help a lot of people‚ my curiosity about human being and disease‚ Firstly‚ I have
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Name _________________________________________ Date _________________________ Period ____ Homework Chapter 7: Electronic Structure of Atoms Exercises: Sections 7.4‚ 7.5 : Ionization Energy and Electron Affinities 1. Write equations that show the process for (a) The first two ionization energies of gallium; first: Ga(g) → Ga+(g) + 1 e– second: Ga+(g) → Ga2+(g) + 1 e– (b) the fourth ionization energy of rhodium. fourth: Rh3+(g) → Rh4+(g) + 1 e–
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The Middle Ages were a time of change. This time‚ lasting from about 400 to 1500‚ changed many people’s lives drastically. In Western Europe‚ life for many groups was affected. The power and importance of the Pope‚ the Kings‚ and the Nobles was greatly altered. The Pope was affected in many ways. One way was caused when the Pope reformed the church. In the early middle ages‚ the Catholic Popes had control in many political matters‚ and feudal lords had control over church officials. In the eleventh
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Gas 2. Chlorine Cl Normal Conditions- Gas 3. Bromine Br Normal Conditions- Liquid 4. Iodine I Normal Conditions- Solid 5. Astatine At Normal Conditions- Solid Give the names and formulas of three compounds that contain one element from the Noble Gas family. 1. Helium He 2. Neon Ne 3. Argon Ar 4. Krypton Kr 5. Xenon Xe 6. Radon Rn Look up the elements in group 15 from period 2 - 5‚ give the name and symbol of each. Give a biological use for each (click on the element and then on
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Marketing Strategy Strategic Situation Summary: Market Target(s) Description: Barnes & Noble Nook 1. Market Segments Identified- Middle-Upper Class‚ educated‚ moderate- high income‚ heavy internet user 2. Primary Market- Business travelers Percent More Likely Than Average U.S. Adult to…. • Have accessed the Internet outside the home via WiFi or wireless connection (in last 30 days): 199% • Have household income of $100‚000 or more annually: 87% • Have
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atomic number over 82 is radioactive. * Unstable nuclei; too many neutrons:protons‚ large nuclei * Cobalt 60 formed by neutron bombardment. Detection: * Photographic film – exposes film * Geiger counter – alpha particles ionize noble gas * Cloud chambers Calibration Curve (AKA Standard Curve) * A number of Solutions (of known concentrations) containing the substance to be tested are prepared. * The absorbances of each of the solutions are measured (using the appropriate
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3 g. It is filled with propane gas‚ C3H8‚ at 25 o C to a pressure of 3.30 atm. Calculate the mass of the tank after it is filled. (Assuming that the expansion of the tank from an increase in temperature is negligible) (915.141 g) 4. A mixture of noble gases contains 4.46 moles of Neon and 0.74 moles of Krypton and y mole of Xenon at a pressure of 2 atm. (a) Determine y mole of Xenon if the partial pressure of Neon is 1.214 atm. (2.148 moles) (b) Determine the partial pressure of Krypton. [Sep
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Totalitarianism consists of a combination of two features: authoritarianism and ideology. By authoritarianism‚ it means a system in which ordinary citizens have no share‚ directly or indirectly‚ in making political decisions1. The latter feature implies a ubiquitous scheme of values propagated by some person or persons and fostered by institutional means in order to direct all aspects of private and public life2 that are significant to politics. With this definition in mind‚ this essay will put forward
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properties. 2. What is significant about elements in the same group on the periodic table? (3.02) a. They have the same number of protons. b. They have the same number of electrons. c. They have the similar chemical properties. d. They are all noble gases. 3. As you go left to right across the periodic table‚ which of the following is true? (3.02) a. The elements have the same number of valence electrons. b. The elements increase in radius. c. The elements have the same common charge. d
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Rayleigh‚ an English chemist. Argon makes up about 0.93% of the Earth’s atmosphere. It is a byproduct of the product of nitrogen and oxygen. Per year‚ it is commercially produced around 700‚000 tons globally. Argon is a colorless‚ odorless‚ tasteless noble gas. Although it is colorless‚ argon gas does produce a pale blue-violet light when a little mercury is added. It has a melting point of 83.30 K (-189.35 C or -308.83 F) and a boiling point of 87.30 K (-185.85 C or -302.53 F). Even though argon isn’t
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