qÜÉ=hçêÉ~å=t~ê gìåÉ=OR=NVRM=J=gìäó=OT=NVRP Class: 4A1 • Date: 23 January‚ 2013 Xavier Ho • Clement Chia • Bruce Ong • Fan Zhi Qing • Ding Yi Fan q~ÄäÉ=çÑ= `çåíÉåíë= • kÉïë=píçêó • lÄáíì~êáÉë • `~êíççå • j~é=çÑ=hçêÉ~ • píêÉåÖíÜë=~åÇ=tÉ~âåÉëëÉë=çÑ=kçêíÜ=~åÇ=pçìíÜ=hçêÉ~ • kÉïëé~éÉê=eÉ~ÇäáåÉë • mçÉãLpçåÖ • bÇáíçêá~ä • ^ÇîáÅÉ=`çäìãå • mçëíëÅêáéí=m~ÖÉ • fåíÉêîáÉï tÜ~í=Å~ìëÉÇ=íÜÉ=hçêÉ~å= t~ê\ After World War II‚ Koreans rejoiced at the defeat of the Japanese‚ but their joy was
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of water by looking for the chemicals free chlorine‚ chloride‚ sulfate‚ nitrate‚ copper‚ total hardness‚ iron‚ hydrogen sulfide‚ lead‚ pesticides‚ pH‚ total alkalinity‚ and total chlorine inside a water sample. The chemicals that produced a 0.0 result meant that there was no trace of that chemical inside the sample. The chemicals not found were copper‚ hydrogen sulfide‚ free chlorine‚ lead‚ iron‚ pesticide‚ and total chlorine. As a class we found the results of the other chemicals that were present
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engine blocks include Grey Cast Iron‚ aluminum and Compacted Graphite Iron (CGI). In the early years of building engine blocks‚ grey cast iron was the only material used. The process of using alloys was non-existent and aluminum was a new material which few people were familiar with. At the time‚ however‚ grey cast iron worked very well. The carbon‚ present as flakes of graphite‚ in grey cast iron gives the material good resistance to wear and also provides good corrosion resistance and lubrication
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metals? | Science 2012 | Could electrolysis be used to determine the comparative reactivity of metals? | Contents COULD ELECTROLYSIS BE USED TO DETERMINE THE COMPARATIVE REACTIVITY OF METALS? 2 BACKGROUND 2 Electrolytic and Galvanic corrosion: 3 AIM 5 HYPOTHESIS 6 VARIABLES 6 APPARTATUS 7 DIAGRAM 8 METHOD / PROCEDURE 8 RESULTS 11 Tables 11 Graphing 13 DISCUSSION 14 Graph 1 / 2(Volume of Hydrogen Produced): 14 CONCLUSION 16 EVALUATION 17 Strengths 17 Weaknesses
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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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Engineering Materials Week 9 12.11 Iron titanate forms in the ilmenite crystal structure that consists of an HCP arrangement of ions. (a). Which type of interstitial site will the ions occupy? Why? Since this ratio is between 0.414 and 0.732‚ the ions will occupy octahedral sites (b). Which type of interstitial site will the ions occupy? Why? Since this ratio is between 0.414 and 0.732‚ the ions will also occupy octahedral sites. (c). What fraction of the total tetrahedral sites will be occupied
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necessitated the use of these new technologies to give such improved properties as increased load handling‚ longer lifetimes and corrosion resistance to name but a few. Engines in particular have received much attention. The engine and its components alone contribute to 15 percent of the total frictional losses in the vehicle. Aluminium alloys have more recently been preferred to cast iron to reduce the overall weight of the car‚ to improve fuel efficiency and road performance. However‚ as engine technology
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uncomplicated‚ with no particular methods; (three) you will discover strong against nature destruction and corrosion resistance‚ and capability to weather-resistant; (4) can withstand a wide selection of variants‚ and nevertheless does not collapse. Fixed thermal insulation effect; (five) the fantastic technological foundation guarantees that the coating thickness uniformity‚ more corrosion-resistant; (six) save on transport costs. Can be compressed into modest volumes and involved in moisture-proof
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In today’s world‚ you can choose from steel and aluminum truck beds. While steel was the most popular option in the past‚ aluminum is becoming increasingly popular. So why are people switching to aluminum truck beds? Here are BLANK good reasons: 1. Aluminum Is Lighter As you might expect‚ aluminum is much lighter than steel. While weight isn’t usually a huge factor when it comes to shopping for truck beds‚ a lighter bed does offer some benefits. Perhaps the biggest benefit of a lighter truck bed
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Not just a piece of architecture Monuments have stories to tell Monuments have been created for thousands of years‚ and they are often the most durable and famous symbols of ancient civilizations. Monuments are frequently used to improve the appearance of a city or location. Planned cities such as Washington D.C.‚ New Delhi and Brasília are often built around monuments. Monuments are also often designed to convey historical or political information. They can be used to reinforce the primacy
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