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The purpose of this investigation was to find the average atomic mass for the element Beanium with three isotopes. The average atomic mass is the average mass of the atoms of the element divided by the total number of atoms. An isotope is an atom with the same number of protons, but different number of neutrons; they are different forms of a single element. Since we knew the isotopes had almost the same amount of sub-atomic particles, we made our hypothesis the following: If the sub-atomic particles are almost exact in amount the total mass, average mass, relative abundance, percent abundance, and the relative mass were also going to be almost exact.…
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7 The atomic number of an atom is always equal to the number of its…
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This element was discovered by Friedrich ernst Dorn a German Chemistry. It was founded in 1900. It was discovered while studying Radion Dk chain.…
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chemical element here on our own planet Earth. Though it is a rare, unreactive noble gas,…
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Purpose: The purpose of this lab is to calculate the atomic mass of “pennium” using pennies made before 1982 and pennies made 1982 or after.…
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The atomic mass number is the sum of the number of protons and neutrons in the nucleus of an element and the atomic number is the number of protons that it has.…
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The Atomic Theory of Matter 2.2 The Discovery of Atomic Structure Cathode Rays and Electrons Radioactivity The Nuclear Atom 2.3 The Modern View of Atomic Structure Atomic Numbers, Mass Numbers, and Isotopes 2.4 Atomic Weights The Atomic…
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One of the many elements on the periodic table is Aluminum. Aluminum is the 13th element, and it is located in period two and group thirteen. Aluminums symbol is Al and it has an electron configuration of [Ne] 3s2 3p1. Aluminum also has an atomic mass of 26.982 and its atomic number is 13. This element was discovered by Hans Christian Oersted in the year of 1825, and was named by the English chemist Sir Humphry Davy (Helmenstine, 2012). Its name ‘Aluminum’ came from the Latin words ‘alumen’ or ‘alum’, which is an astringent and dyeing mordant. Originally, Davy called it “Alumium’ but the publishers later changed it to Aluminum, and that’s how it remains in the United States (N/A, n.d.).…
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The soviet espionage stole information that helped soviet scientists speed up the development of their atomic program. In this paper you will learn about the Soviet espionage and the Manhattan project. With that said, the Manhattan Project was started from the threat of the Axis Powers having an atomic bomb. Their scientists would be able to make their first bomb after a breakthrough of a Nuclear Chain Reaction. Countries trying to get information for America and the Manhattan project failed and the U.S. caught them.…
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In all chemical reactions, mass is conserved. The total mass of all the reactants equals the…
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In 1808 Barium was isolated by an English chemist named Sir Humphry Davy by electrolysis of molten baryta or BaO. But it was discovered in 1779 by Carl Scheele. Barium is classified as an alkaline-earth metal. Its atomic number is 56 and it is the fifth element in group 2.Natural Barium is made up of a mixture of seven stable isotopes, there are thirteen radioactive isotopes known to exist. Barium has never been found in nature in its pure form. When Scheele discovered barium in the 1700's he could not isolate it he could only isolate the barium oxide. Another person to isolate the barium oxide was a man named Johan Gahn but he did it two years after Scheele did. Davy who finally managed to isolate barium on its own, did it by analogy with calcium and decided to name it Barium after the word baryta. Pure oxygen used to be produce through the Brin Process before they started using barium peroxide to liquefy air and produce oxygen. Barium appears as a silvery white color metal. Barium van be found anywhere in the environment because it exists there naturally. Barium has many compounds that are used today mostly industrially. Barium is very light and has half the density of iron. Barium oxidizes air and reacts with water to form the hydroxide that liberates hydrogen. Barium reacts with most non-metal to creating poisonous compounds. After…
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In “Einstein’s letter to the President” Einstein explains his important perspective on uranium and his responsibility for the scientific and political situation of his time.…
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Within the discoveries found all around the world scientists have found a few rare chemical elements in the process of the search. Some of the chemical elements included were the iridium, cosmic space dust, the isotope plutonium 244 and sulfur as well. Currently, the main suspect behind this…
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