chemical interactions between metal and gases in the surrounding environment. By removing the metal from‚ or changing‚ the type of environment‚ metal deterioration can be immediately reduced. This may be as simple as limiting contact with rain or seawater by
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Chemistry •Matter • • • States Properties Classification Chemistry is the study of the composition‚ properties and structure of matter. it is considered “the central science”; blending at one extreme into physics‚ mathematics‚ engineering and sometimes into earth and life Chemistry Is the study of the matter‚ its classification‚ composition‚ properties and structure; the changes it undergoes‚ the energy transformation that goes with the change‚ and the laws and principles governing such changes
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Experiment IV Solubility of Dissolved Oxygen Purpose To demonstrate the effect of partial pressure‚ temperature and salinity on the solubility of dissolved oxygen and to demonstrate the interference of nitrite in dissolved oxygen analysis by the Winkler Method. To demonstrate the use of the oxygen electrode and the difference between activity and concentration. References 1. Mancy‚ K. H.‚ Jaffe‚ T.‚ "Analysis of Dissolved Oxygen in Natural and Waste Water‚" USDHEW Public Health Service
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Levels above 175 mg CaCO3/L reduces natural food production in ponds which‚ in turn‚ leads to a decrease in optimal production. Salt water is slightly alkaline and has a strong buffering capacity so alkalinity is not usually of concern for most seawater and brackish water aquaculturists. 2. Biochemical oxygen demand ( and COD) It is a measure of the amount of oxygen required by bacteria‚ algae‚ sediments and chemicals over a set period of time. BOD is of importance in aquaculture because
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1 NOAA Activity Part One Ocean Exploration.pptx SCI-209 Week 2 DQs.doc SCI-209 Week 2 The Creation of the Ocean Floor Paper.doc SCI-209 Week 3 DQs.doc SCI-209 Week 3 NOAA Activity Part Two Marine Pollution.pptx SCI-209 Week 3 Seawater Paper.doc SCI-209 Week 4 DQs.doc SCI-209 Week 4 Learning Team Assignment Outline.pptx SCI-209 Week 4 Natural Ocean Disasters Paper.doc SCI-209 Week 5 DQs.doc SCI-209 Week 5 NOAA Activity Final Section Marine Adaptations.pptx
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end‚ all these thoughts ran through my brain. I felt suffocated under the pressure‚ but I calmed myself down. I tried to kick my feet loose from the seaweed. Once I freed myself‚ I kicked up to the surface of the water. I coughed and threw out the seawater that got stuck up my nose. Before another wave crashed I decide to swim parallel waves‚ as I had been taught. I reached shore‚ and saw Olivia walking frantically to
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An aquifer is an underground layer of water bearing rock. Many areas on earth have an underlying aquifer‚ which can supply fresh water through the use of a well. Aquifers were first tapped for water in the early 1900 ’s for irrigation. Aquifers were originally believed to be an inexhaustible resource thus humans began tapping them for municipal and industrial uses as well (Aquifer‚ 2007). Now‚ many countries are over pumping aquifers in a struggle to fulfill their growing water supply demands. For
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Iron‚ which has the chemical symbol Fe‚ is an extremely useful metal and the most common element 0n the planet Earth. Here are some of the more common uses of iron in the world today. Uses of Iron * Iron catalysts are used in the Haber-Bosch Process to produce ammonia and the Fischer-Tropsch Process to convert carbon monoxide to hydrocarbons used for fuels and lubricants. * Iron metal is strong but is also quite cheap. Therefore‚ it is the most common metal in use today. Most automobiles
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Desalination of Water While renewable‚ the world’s water supply is being depleted faster than it is being refilled. This has caused ¼ of the global economy to be at risk because of non-sustainable water use. A solution to the unsustainable water crisis is desalination. 97% of all water on Earth is non-usable salt water. The other 3% is fresh‚ usable water‚ however ~68% of that water is locked up in glaciers‚ and 30% is stored in underground aquifers. The remaining 1-2% comes from things such as
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K Keel KOy Mass radius of gyration of floating body about its longitudinal axis M Transverse metacenter m Mass T Period of oscillation W Weight of floating body Greek Symbols: Angle of heel or inclination Density of seawater f Density of liquid in tank INTRODUCTION Stability is a measure of the tendency of an ocean vehicle to return to its upright configuration if inclined or perturbed by an external force (Figure 1). For different operating conditions‚ stability
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