that this data is in accordance with the law of multiple proportions. 6. Calculate the mass of 1 molecule of nitrogen 7. Calculate the mass of 1 molecule of water and 100 molecules of C12H 22O11 8. Calculate the mass of an atom of silver (Ag = 108 amu) 9. Calculate the number of atoms in (a) 52 moles of He (b) 52 a.m.u of He (c) 52 g of He 10. Calculate the volume occupied by the following at STP a. 14 g of nitrogen gas b. 1.5 gram mole of CO2Che/XI Chapter 1 11. Calculate the number of
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form of nickel has a positive 2+ charge overall. The electron configuration is [Ar] 3d8 4s2.(Which breaks down to 2 electrons in the first level‚ 8 in the second‚ 16 in the third‚ and 2 valence electrons.) The element has an atomic mass of 58.693 amu(atomic mass unit)‚ which is actually smaller than the element before it-Cobalt. The element has physical characteristics of a hard‚ silvery-white metal‚ that is malleable and ductile. Another property of Nickel and its compounds is that they are extremely
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periodic table‚ the atomic mass in the top left corner of every box is a decimal. The mass is in decimal format because the number listed is an average of that atom‚ plus all of its isotopes. Isotopes have different masses because neutrons weigh 1 amu where as an electrons weight would be negligible. The experiment described below shows how including all isotopes of one element effect the average atomic mass of the element. Materials: 1. Calculator 2. Whitium sample 3. Brownium sample
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number of representative particles number of representative particles x 1 mole / 6.02 x 10²³ representative particles = number of moles II. Mass and the Mole A. The Mass of a Mole each atom of carbon-12 has a mass of 12 atomic mass units (amu). atomic masses of all other elements are established relative to carbon-12 molar mass: the mass in grams of any pure substance. molar mass of any element is numerically equal to its atomic mass and has the units g/mol. B. Using Molar Mass
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currently in the ARMY and I want to become a psychologist. I’m planning on transferring my military credits along with the credits I received through Argosy University to fulfill my desire to get the degree I want. My course selections that I choose at AMU will be the ones needed to fulfill the institution’s requirements to grant the degree. My main goal is to provide for my family. Getting this degree will help me apply to various other schools granting the PSYD degree and
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Outgoing Defense Secretary Leon E. Panetta announced Thursday a lifting of the ban on female service members in combat roles‚ a watershed policy change that was informed by women’s valor in Iraq and Afghanistan and that removes the remaining barrier to a fully inclusive military‚ defense officials said. Panetta made the decision “upon the recommendation of the Joint Chiefs of Staff‚” a senior defense official said Wednesday‚ an assertion that stunned female veteran activists who said they assumed
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newly produced gas contained the element oxygen. However‚ in 1810 Sir Humphry Davy proved that this gas was actually its own distinct element. The chemical symbol for Chlorine is Cl; the element has an atomic number of 17 and an atomic mass of 35.4527 amu. There are two natural isotopes for Chlorine‚ 35Cl and 37Cl‚ which have an abundance of 75.78% and 24.22% respectively. On the periodic table‚ chlorine
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Chapter 2 The Components of Matter Elements‚ Compounds‚ and Mixtures: An Atomic Overview An element consists of only one kind of atom. An element is one kind of substance – the composition is fixed. Each element is unique because the properties of its atoms are unique. Molecules are structures containing two or more atoms chemically bound together. Diatomic molecules are two-atom molecules such as elemental oxygen. A compound is a type of matter in which two or more different elements are chemically
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Jarrett Sears Dr. Hummel Chem 121 2/7/13 A Chemical Reaction between Tin and Nitric Acid Introduction: Finding the products made from the components of tin metal and nitric acid is the ultimate objective of this lab; the formula of the products will be found in the CRC handbook thereafter. Procedure: First‚ obtain a clean crucible‚ and heat it under a Bunsen burner until it is as hot as possible‚ about 15 minutes within a fume hood unit. The Bunsen burner will be used under the fume
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School: Arts and Humanities Course Number: ENGL102 Course Name: Effectiveness in Writing Credit Hours: 3 Length of Course: 8 Weeks Prerequisite: ENGL101 Table of Contents Instructor Information Evaluation Procedures Course Description Grading Scale Course Scope Course Outline Course Objectives Policies Course Delivery Method Academic Services Course Resources Selected Bibliography Instructor Information See your classroom for your instructor’s contact
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