EXPERIMENT 5 REDOX TITRATION: TITRATION USING SODIUM THIOSULPHATE Objectives 1. 2. To prepare a standard solution of potassium iodate for use to determine the concentration of sodium thiosulphate solution accurately. To acquire the proper techniques of carrying out a titration. Introduction Redox titrations using sodium thiosulphate as a reducing agent is known as iodometric titration since it is used specifically to titrate iodine. The reaction involved is: I2 + 2Na2S2O3 I2 + 2S2O322NaI + Na2S4O6
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Under the Endangered Species Act in the United States‚ species may be listed as "endangered" or "threatened". The Salt Creek tiger beetle (Cicindela nevadica lincolniana) is an example of an endangered subspecies protected under the ESA. The US Fish and Wildlife Service as well as the National Marine Fisheries Service are held responsible for classifying and protecting endangered species‚ and adding a particular species to the list can be a long‚ controversial process (Wilcove & Master‚ 2008‚ p.
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Members of teaching staff demonstrate expected behaviour in many ways throughout school. Initially the presentation and personality of the members of staff is a primary method of setting a good example. Teachers and teaching assistants should dress appropriately for work‚ wearing smart clothing yet clothes that can cope with the demands of the working day (e.g. ties that clip on/off to prevent strangulation if pulled‚ clothing that isn’t too tight/restrictive). Teachers and TA’s should speak to other
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invasive grasses. Native and Invasive species play a big role in our ecosystem. Native species make it so we don’t have to use as many fertilizers‚ use less water‚ keep the air around you cleaner‚ provide shelter and food for wildlife etc. Invasive grass species are bad because for one they are obviously not native to the area and can colonize habitats and exclude the native plants. Did you know a Dandelion is an invasive species? Well it is it from Europe but can be commonly found growing in other
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KEYSTONE SPECIES-BEES Elliott Chang Keystone Species are species that would affect our lifestyle and how we live if they were to die out. There called Keystone Species because in an arch‚ there is one stone that keeps the 2 halves of the arch in place and if you were to take it out‚ everything would collapse. Bees are like that. Bees contribute to our society economically‚ ecologically and biologically. They are the species that really make everything the way it is for us. Bees contribute
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Hydrilla: An Invasive Species Hydrilla verticillata‚ otherwise known as Hydrilla is an aggressive water weed and is said to be one of the world’s worst invasive aquatic plants. Hydrilla in temperate places around the globe and somehow made its way to the United States. Hydrilla has a special advantage; it grows under lower light conditions than nearly any other species‚ it only needs about 1% of sunlight. This advantage allows hydrilla to grow underneath other plants and survive greater depths;
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leaders in charge of a march‚ believed in himself and of his fellow men to produce change and innovation to this era. By marching to Washington‚ Coxey’s army started the production of jobs and work for men that were willing to do so. In a sense‚ Coxey’s army got
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Meanwhile‚ there are only two factors that stimulate the same effect on the LM curve: alterations in money supply and autonomous shifts in money demand (Revier‚ 2000). A rise in money supply creates an excess of money on the initial LM curve‚ thus shifts the LM to the right as observed in Figure 1.3 (Revier‚ 2000). The occurrence of excess demand may be eliminated by rising the interest rate‚ causing the level of money demanded to fall until is meets the quantity of money supplied again (Revier‚
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SPECIES‚COMMUNITY AND ECOSYSTEM SP | SPECIES1.Every different living thing is called a species2.Examples:a) A sparrow is a species of bird.b)A pigeon is another species of bird.3.Individuals from the same species have the same appearance and characteristics.4.Individuals from the same species are able to reproduce among themselves. | | POPULATION1.A group of the same species living together in the same habitat forms a population. 2.EXAMPLES:a)A group of sparrows living together forms a
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Not Reanimate address is that we can revive species that could possibly help our ecosystems and save modern day species of animals from going extinct; but on the other hand‚ reviving “extinct species poses a risk of selling the public on a false promise that technology alone can solve our ongoing environmental woes.” Reviving certain species could give ecosystems that depend on “keystone species” that have lost the species diversity they once had because some species no longer fit. And as environmental
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