Experimental Determination of the Formula of Magnesium Oxide. Introduction: Magnesium is a mental‚ it is known to react with oxygen. Magnesium reacts vigorously when heated in the presence of air‚ which is why we have chosen high heat in our method to facilitate combustion. This oxidation reaction produces magnesium oxide gaining oxygen from the air. When sharing of electrons occur a chemical bond is made and the atoms combine to form a molecule. So‚ the predicted molecular formula:
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Complexometric Determination of Water Hardness Kayla Partridge Britni Gonzales 09/15/2014 Abstract Determining the water hardness of unknown sample #55 was determined by complexometric titration. With the use of disodium salt EDTA as the solution to chelate the metal impurities and the Eriochrome Black T indicator as the solution used to help visualize when the impurities were completely chelated‚ along with a few other solutions to help the reaction. Unknown water sample #55 experimental
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the titration. EDTA (aq) + MIn- (aq) + 2H+ (aq) → H2In- (aq) + MEDTA (aq) Procedure/Data 0.8652 g of 0.004 M disodium EDTA was dissolved in 500 mL of deionized water within a sealed plastic bottle. Na2EDTA solution was standardized using 10 mL of CaCO3‚ 30 mL of DI water‚ five drops of Eriochrome Black T indicator‚ and 3 mL of NH3/NH4Cl (aq) buffer. Na2EDTA was titrated until the Eriochrome Black T solution
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CHEMISTRY DETERMINATION OF ENTHALPY CHANGE OF NEUTRALIZATION IA Criteria Assessed: DCP CE MS Introduction When an alkali neutralizes an acid‚ a salt and water are formed. Aqueous hydrogen ions (H+(aq)) from the acid react with the hydroxide ions (OH- (aq)) from alkali‚ forming water. The identity of salt will depend on the nature of the acid and alkali used. H+(aq) + OH- (aq) → H2O(L) The combination of H+ and OH- ions in this way releases energy. In this practical‚ the
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Determination of g by Free Fall Raw Data: Time (ms) ± 0.01ms Height of release of ball from the sensor plate (cm) ±0.1cm Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 0.0 0.00 0.00 0.00 0.00 0.00 15.0 180.05 179.36 178.74 180.26 180.23 30.0 244.33 244.21 244.71 243.88 245.87 45.0 300.72 301.29 300.59 301.43 301.70 60.0 348.68 348.39 348.77 349.12 348.35 75.0 390.27 390.77 389.58 391.19 390.43 This table below is the results obtained during the experiment in cm/ms. This table below is the results
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are often monomorphic in their development‚ and hence early determination of gender would be similarly difficult.In regards to Gallus gallus domesticus‚ the common chicken this difficulty in gender identification is quite evident in their progeny.After
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Edgar Allan Poe’s The Philosophy of Composition was written in 1846‚ and according to my perception of what he writes‚ it was first of its kind. None before him had dared to reveal their creative process‚ as difficult and complex as it is‚ and for this they received particular criticism from Poe himself. It seems to me‚ that although he respects that other writers consider the creative process a secret or merely a sled of unexpected mind twists and mysterious thought processes‚ he himself wanted
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The self-determination of the Sahrawi People Western Sahara has been the focus of Human Right organizations for almost a decade. Reports of an array of human right abuses have been claimed mostly due to the militaristic policing of the displaced Sahrawi people caused by the Moroccan government. This paper will conduct an evaluation of the human right abuses and thus provide possible remedies to end them. First this paper will provide a brief summary of the highly complex history of the Sahrawi people
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Odysseus‚ in The Odyssey by Homer‚ and I both demonstrate determination in many different ways. The first example is when they stopped at the land of the Lotus Eaters. The men that ate the lotus wanted to stay on the land because they were addicted to the lotus‚ but Odysseus‚ the great leader‚ would never let that happen. He said‚ “I drove them‚ all three wailing‚ to the ships‚ tied them down under their rowing benches” and told the rest not to eat the Lotus or they would lose their wishes of wanting
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Wildcat’s article “The Question of Self-Determination” explains that self-determination is when one freely chooses to act or think a certain way. He then examines in great detail the question of what does self-determination really mean for Indigenous Peoples? Wildcat states that Indigenous self-determination commences with consideration for the relations around us whether they are political‚ social‚ economic or spiritual in nature. The article also explains that education is in and of itself an assimilation
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