fundamental building blocks of matter are atoms and molecules. These make up elements and compounds. An atom is the smallest unit of an element that maintains the properties of that element. And element is a pure substance made of only one kind of atom. A compound is the substance that is made from the atoms of two or more elements that are chemically bonded. Water is an example of a compound because it is one of many compounds that consist of molecules. The hydrogen and oxygen molecules are chemically bonded
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TECH0701: Measuring the Melting Points of Compounds and Mixtures Introduction This exercise dealt with the melting points of pure mandelic acid and benzoic acid. The eutectic temperature and composition of mandelic and benzoic acid mixtures were determined. And finally‚ an unknown was identified by its mixtures and melting point. The melting point of a compound is used by organic chemists not only to identify the compound‚ but also to establish its purity. To determine the melting point two
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Identification and Recreation of Unknown White Compound #643p November 13‚ 2012 INTRODUCTION: The identity of the unknown solid white compound is determined and verified through a series of tests which uncover physical and chemical properties necessary for identification. A new sample of the same compound is then created to further prove the accuracy of the identification. The compound must be identified in order to be used. For example‚ KCl is used in medicine‚ scientific applications‚ and
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Running head: COMPOUND NOUNS IN VIETNAMESE AND ENGLISH COMMERCIAL TEXTS Compound Nouns in Vietnamese and English Commercial Texts A Contrastive Analysis Abstract Learning has always been a challenging process to obtain knowledge. This is undeniably true in studying economics in a different language. The quest to understand a concept itself may present some difficulties. Yet‚ comprehending the wordings that may lead to such understanding can also be overly frustrating. Through reading some
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COMPOUND INTEREST ASSIGNMENT - 1 1. Mr. Dubey borrows Rs 1‚00‚000 from State Bank of India at 11% per annum compound interest. He repays Rs 41‚000 at the end of first year and Rs 47‚700 at the end of the second year. Find the amount outstanding at the beginning of the third year. 2. What sum of money will amount to Rs 9261 in 3 years at 5% per annum compound interest? 3. The simple interest on a sum of money for 2 years at 4% per annum is Rs 340. Find (i) the sum of money and (ii) the compound
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1. An organic compound X with a molecular formula C2H6O undergoes oxidation with in presence of alkaline KMnO4 to form a compound Y. X on heating in presence of Conc. H2SO4 at 443K gives Z. Which on reaction with H2Oin presence of H2SO4 gives back `X` `Z` reacts with Br2 (aq) and decolorizes it. Identify X‚ Y‚ & Z and write the reactions involved. 2. An organic compound ‘A’ is widely used as a preservative in pickles and has a molecular formula C2H2O2. This compound reacts with ethanol to
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13.1 Compound Interest • Simple interest – interest is paid only on the principal • Compound interest – interest is paid on both principal and interest‚ compounded at regular intervals • Example: a $1000 principal paying 10% simple interest after 3 years pays .1 3 $1000 = $300 If interest is compounded annually‚ it pays .1 $1000 = $100 the first year‚ .1 $1100 = $110 the second year and .1 $1210 = $121 the third year totaling $100 + $110 + $121 = $331 interest 13.1 Compound Interest Period
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Carbon and Its Compounds Carbon: Introduction Atomic Number: 6 Electronic Configuration: 2‚ 4. Valence electrons: 4 Property: Non-metal Abundance:- Carbon is the 4th most abundant substance in universe and 15th most abundant substance in the earth’s crust. Compounds having carbon atoms among the components are known as carbon compounds. Previously‚ carbon compounds could only be obtained from a living source; hence they are also known as organic compounds. Bonding In Carbon:- The Covalent
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Ionic compounds are formed when a metal and a non-metal join together. When sodium metal is dropped into a gas jar of chlorine gas the elements react violently to form a new compound called sodium chloride joined by ionic bonds. To understand how this process works‚ we must grasp an understanding of what an ion is and what an ionic bond is. An ion is an atom that has an electric charge and is created when an atom (or a group) gain or loses electrons. (It has an electric charge due to the imbalance
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commencing at age 60 and ending at age 67 Plan 1: V0 * (1.06)42 = 3‚000‚000 V0 = 3‚000‚000/(1.06)42 V0 = $259‚582.20 Plan 2: V0 * (1.06)17 = 3‚000‚000 V0 = 3‚000‚000/(1.06)17 V0 = $1‚114‚093.26 Plan 3: C * Annuity Compound Factor (6%‚ 37) = 3‚000‚000 C * [((1.06)37 – 1)/0.06] = 3‚000‚000 C *127.27 = 3‚000‚000 C = $23‚572.28 Plan 4: C * Annuity Compounding Factor (6%‚17) = 3‚000‚000 C * 28.21 = 3‚000‚000 C = $106‚334.41 Plan 5: C * Annuity
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