early atmosphere - earth roughly 4 billion yrs old - created by volcanoes erupting + releasing gases - contained mostly co2 + water vapour - earth cooled + water vapour condensed to form oceans - co2 dissolved into oceans + used to form marine organism shells which were compacted to form sedimentary rock - plants evolved to photosynthesise‚ takingin co2 + releasing oxygen - scientists don’t kno where all nitrogen came from bc they weren’t there to record evidence but most theories suggest
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Syn Siew‚ Sandra George‚ Muhammad Nawaz‚ Dean Carney‚ Steve Baker | 11/23/2012 | Contents Abstract 2 What is Ammonia 3 Application and Uses 3 Market Trends 3 Processes 4 Partial Oxidation 4 Hazards and Environmental Impact 4 Electrolysis 5 Steam Reforming 6 Gas purification 6 Desulphurisation 6 The Process 6 Justification 7 Mass Balance 7 Cp Values 7 Energy Balance 7 Raw Material Costs 7 Pay Back Time 7 Conclusion 7 Appendices 8 Reference 1: Partial Oxidation
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cheaper. A cheaper way to separate hydrogen is electrolysis. Electrolysis includes using electrical current to split the water molecule into its main components - hydrogen and oxygen - and then containing those components as fuel. Here lies the misconception: when introduced to electrolysis‚ most people think that the electrical current will come from energy produced by fossil fuels. This‚ however‚ is far from the truth. Contrary to fuel reforming‚ electrolysis does not require the use of another fossil
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contains about the equivalent of 5000 cubic feet of hydrogen and is broken down and releases gas into the second chamber where it goes to the engine for use. There are many ways to get pure hydrogen out of many compounds using methods such as electrolysis and chemical reactions. One of the easiest ways is using a chemical reaction. Simple chemicals (aluminum‚sodium hydroxide‚ and water) can be reacted in the home to produce heavy hydrogen to power your furnace or your hot water heater . No electrical
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THE 4 QUALITIES OF GOOD WATER by Dr. Robert O. Young There are many measurements of water‚ but the most important for determining the best water to drink are‚ the pH‚ oxidative reduction potential—or energy potential/activity—molecular structure‚ and purity. Science has helped us to determine that the best measurements for our drinking water are the pH and purity‚ but little understood is the importance of the molecular structure of water. Assuming that most waters that humans are drinking
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AP Chemistry: Chapter 17 Student Notes Objectives 17.1a: Review Redox Assign Oxidation Numbers to the following: a. HNO3 b. PbSO4 c. (NH4)2Ce(SO4)3 Balance the following in acidic medium Al (s) + MnO4- (aq) Al3+ (aq) + Mn2+ (aq) Balance the following in a basic medium Mg (s) + OCl- (aq) Mg(OH)2 (s) + Cl- (aq) Balance the following Redox Reaction: The big nasty problem K4Fe(CN)6 + KMnO4 + H2SO4 KHSO4 + Fe2(SO4)3 + MnSO4 + HNO3 + CO2 +H2O 17.1: Galvanic Cells
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* All electrical equipment must be UL Certified * Inspect electrical equipment regularly * Never leave you client unattended while electrical equipment is being used on them. * Always hold onto the plug not the cord when taking a plug out of an outlet * Never use electrical equipment around water. Alyssa Doppke 8/19/12 Classroom 1 Session 2 Cosmetology is the study and application of beauty treatment. Branches of specialty including hairstyling‚ skin care‚ cosmetics‚ manicures/pedicures
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knowing that is used when it comes to making a hypothesis. For example‚ when I recently investigated the effect of the duration of electrolysis[1] on the mass of the electrode[2]‚ I believed that more time would increase the rate of electrolysis. Reasoning is essential when it comes to forming a belief because there needs to be a reason behind why I think time effects electrolysis. Prior to conducting a science experiment‚ people use their knowledge of the sciences to form a hypothesis. When I made the
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In many ways‚ laser hair removal is much better than other hair reduction methods‚ including electrolysis‚ waxing‚ shaving‚ tweezing‚ or depilatory creams. It can produce long-lasting effects‚ unlike many of the methods on this list. It takes just a few treatments‚ unlike the ongoing ritual of shaving or waxing. If you’re tired of these routines‚ then using a laser s holds an advantage over your current short-term methods of removing unwanted hair. Laser hair removal is not only longer-lasting than
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CHBr2 − CHBr2 + 2Zn ⎯⎯→ CH ≡ CH + 2ZnBr2 Iodoform reacts with silver powder to give acetylene. 2CHI3 + 6 Ag ⎯⎯→ C2H2 + 6 AgI Δ Kolbe’s electrolysis : Sodium or potassium salts of unsaturated dicarboxylic acids‚ on electrolysis will give alkynes. Potassium maleate or potassium fumerate on electrolysis gives acetylene CH − COOK HO − H electrolysis CH || + ⎯⎯ ⎯ ⎯⎯ ⎯→ ||| + 2CO 2 + 2KOH + H2 ⎯ CH − COOK HO − H CH at anode at cathode Physical properties : Pure acetylene is colorless‚ odourless
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