Solvay process Raw materials - NaCl‚ salt - CaCO3‚ limestone - H2O‚ water - NH3‚ ammonia is recycled Useful products - sodium carbonate. Na2CO3 – reason for process Waste products - CaCl2‚ calcium chloride - Heat Chemical properties of the main product (Na2CO3) - Forms several hydrates which are used in many ways - It is moderately alkaline‚ so it can neutralise strong acids - Can precipitate many metal ions from solution as carbonates Uses of sodium carbonate - Glass
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powder‚ or ingested over a long period. Most lead salts are very poisonous‚ as are many organic compounds containing lead‚ such as lead tetraethyl. Silver nitrate‚ AgNO3 Stability-Stable. Substances to be avoided include nonmetals‚ organic substances‚ alkali hydroxides‚ acetylidene‚ acetylene‚ aldehydes‚ nitriles‚ ammonia‚ alcohols‚ ammonium compounds‚ combustible materials‚ hydrazine and its derivatives‚ carbides‚ magnesium in powder form‚ alcohols. Light-sensitive. Strong oxidizing agent. Toxicology-Poisonous
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Efficient Fertilizer Use — Fertigation: by Dr. Bill Segars SECTION CONTENTS: • Introduction • Soil Chemistry • Water Quality Concerns • Fertilizers for Injection Into Irrigation • Use Fertigation Properly and According to Regulations • Irrigation Scheduling & Fertigation • Other Important Factors to Consider When Fertigating Fertigation is defined as the application of nutrients using an irrigation system by introducing the nutrients into the water flowing through the system. The first reported
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Edexel IGCSE Chemistry Revision Notes IGCSE Chemistry Triple Award Revision Guide Topic Introduction to chemistry Atomic Structure Structure and Bonding – Ionic Bonding Structure and Bonding – Covalent and Metallic Bonding Organic Chemistry - Alkanes Organic Chemistry – Alkenes / Addition Polymerisation Organic Chemistry – Alcohols / Condensation Polymerisation Calculations Periodic Table Reactivity Series and Metal Extraction Electrolysis Energetics Acids‚ Bases‚ Salts and Neutralisation Preparing
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The Neolithic and Industrial Revolutions The two changes in the use of the earth’s resources that had the greatest effect on the world population were the Neolithic and the industrial revolutions. The Neolithic revolution (a.k.a. agricultural revolution) was a change in the way of life of our ancestors. It took place about 8000 years ago among various tribes in Asia and the Middle East. It included a transition from foraging and hunting to the domestication of animals (most probably starting
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Analysis of the Oklahoma City Bombing On April 19th‚ 1995‚ at 9:02 AM a bomb exploded outside the Alfred P. Murrah Federal Office Building in Oklahoma City. The cause of the explosion was an Ammonium Nitrate and Fuel Oil bomb in a 24 foot rental truck parked in the street on the north side of the building (Oklahoma City Fire Department Report of the Bombing). The building was home to sixteen federal agencies. This was the most destructive terrorist act on American soil until the 9/11 attacks.
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Investigating the Determining Characteristics of Cations and Anions Chem 111 Sec 560 Introduction: The purpose of this lab was to study the specific characteristics of cations and anions‚ and ultimately to be able to identify an unknown substance based on our studies and tests using the logic trees developed through the experiment. A logic tree is a graphical display of the findings from this lab which‚ through a series of yes/no questions‚ elimination
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The role of first responders‚ especially law enforcement‚ is extremely important in combating terrorism. Police officers that are on the streets everyday in the community are the first line of defense when it comes to a terrorist attack. Making consensual contacts with people in the community‚ being proactive‚ and being visible to the community can have a major impact on terrorist activity. Law enforcement professionals need to be aware of some of the signs of terrorism‚ including criminal activity
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Poultry litter From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search | Agriculture | General | * Agribusiness * Agricultural science * Agroforestry * Agronomy * Animal husbandry * Extensive farming * Factory farming * Farm * Free range * Industrial agriculture * Mechanised agriculture * Ministries * Intensive farming * Organic farming * Permaculture * Stock-free agriculture * Sustainable agriculture * Universities * Urban agriculture | History
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primarily from terrestrial particulates; [P]rain is very low. Changes in of NO3- and NH4+ distributions in North American Rain between 1955 and 1980. Nitrate increases in the east and decreases in the west due to increased and decreased pollutiveinput‚ respectively. Ammonium increases everywhere due primarily to a tripling of the use of ammonium-based fertilizerswithin the continental US over this time interval. [N] and [P] in terrestrial surface fresh waters (Rivers): The [N] cycle has significant
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