← Understand the manufacture of sulphuric acid. ← Synthesise the manufacture of ammonia and its salts. ← Understand alloys. ← Evaluate the uses of synthetic polymer. ← Apply the uses of glass and ceramics. ← Evaluate the uses of composite materials. ← Appreciate various synthetic industrial materiala. (H4SO4) ← USES OF SULPHURIC ACID 1. Sulphuric acid is used to produce chemical fertilizer such as ammonium sulphate and potassium sulphate‚ which are highly soluble in water
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Advantages of the alphabet • Easy to learn‚ as it requires relatively few characters. • Easy to incorporate new words into existing language. • Adaptable for use of new languages. Disadvantages of the alphabet • Easy to learn‚ which makes the ability to write less powerful. • Need to understand spoken language to read. • As spoken language changes‚ it becomes divorced from spoken language The Phoenicians lived in city-states in the area of modern Lebanon‚ in the same way as the Sumerians
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A Guide to Sealing Cryogenic and Low Temperature Applications • PHARMACEUTICAL • FOOD PRODUCTION • BREWING • CHEMICAL • REFRIGERATION • AUTOMOTIVE • PETROLEUM • TEXTILE • ELECTRONICS • AEROSPACE L-UK/US-CYROGEN-01 CRYOGENIC INDUSTRY AESSEAL® CYROGENIC INDUSTRY IN 4902 - 03/2004 2 A GUIDE TO SEALING CRYOGENIC AND LOW TEMPERATURE APPLICATIONS Introduction The purpose of this report is to give the reader an appreciation of typical applications and problems encountered when sealing
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Periodic Table of the Elements Group 1 Group 18 1 1 1.00794 1 2 H 1s1 Hydrogen Group 2 Atomic Number Key 30 65.39 2 Atomic Mass 4.002602 0 He Group 13 Group 14 Group 15 Group 16 Group 17 1s2 Helium 3 2 (6.941) 1 4 9.012182 2 Li [He]2s1 Lithium Be [He]2s2 Beryllium Zn [Ar]3d104s2 Zinc Oxidation States Symbol Electron Configuration 5 10.811 3 6 12.0107 ±4‚2 7 14.0067 ±3‚5‚4‚2 8 15.9994 -2 9 18.9984032 -1 10
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Anderson Kuo Period 1 CHAPTER 19 – The Representative Elements: Groups 1A through 4A -19.1- A Survey of the Representative Elements I. Elements A. Representative Elements: Groups 1A through 8A ← Filling s and p orbitals ← First member of a group forms the strongest ( bonds; results in diatomic molecules B. Transition Elements: center of the table ← Filling d orbitals C. Lanthanides & Actinides: listed separately‚ on the bottom on the table ← Filling
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HOMEWORK EXAM 3: Chapter 19: The half life of 90Sr is 29 years. What fraction of the atoms in a sample of 90Sr would remain 175 years later? Answer 0.166 0.125 0.062 here 0.015 Which relation is not correct? Answer 11p = 11H = proton 0-1e = 0-1β = electron here +10e = +10β= positron 10n = neutron As a result of beta decay‚ the product nucleus is Answer one atomic number lower than the original element. two atomic number
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8/21/2009 |Secondary 2 | Shela Septania Usadi | [pic] Table of Contents Part 1: Abstract 1 Part 2: Introduction 1 Fire 1 Color Of Fire 2 Colored Flame 2 Part 3: A Simple Experiment‚ Green Flames 5 The Materials 5 The Method 5 A Higher Explanation 5 Part 4: Multicolored Fire 6 The Materials 6 The Method 6 Part 5: Uses Of Colored Fire 7 Part 6: Effects
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The word phosphorus is derives form the ancient Greek words phos‚ meaning light‚ and phorus meaning bringing. In nature‚ phosphorus occurs only in the oxidized form of phosphates‚ which are minerals in which each phosphorus atom is surrounded by four oxygens. In 1669‚ alchemy was medieval chemistry’s popular philosophy. It attempted to turn base metals into gold and searched for a mixture for lifetime. An alchemist from Hamburg‚ Germany‚ Hennig Brandt‚ fell onto phosphorus while heating residues
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Recognizing the alarming number of amputations resulting from combat‚ the U.S. government unveiled the "Great Civil War Benefaction‚" a commitment to provide prosthetics to all disabled veterans. When making prosthetics for amputees it was more common to make them out of wood and steel until the cosmetic rubber hand was introduced (MacRae). Prosthetics didn’t help with limping or handshakes‚ but we’re way more advanced today. The next major change is the development of the ambulance system. It was
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ABSTRACT ------------------------------------------------- Food contains nutrients that are very significant to the body. The basic essential nutrients‚ vitamins‚ and minerals play very significant functions in the different metabolic processes. In order for the nutrients to be known‚ several tests were performed to qualitatively analyze nutrients for the different food samples. Reagents were used as indicators to test common food substances for the presence of specific nutrients. Fruit juice
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