10/19/2011 Akruti Patel Lab Report #4: Determination of a chemical formula: the empirical formula of Magnesium Oxide 1. Purpose: Determine the empirical formula of magnesium oxide from the percent composition (this can found using the Analytical Method and the Synthesis Method). 2. Introduction: In the late eighteenth century‚ combustion has been studied extensively. In fact‚ according to Steven and Susan Zumdahl‚ Antoine Lavoisier‚ a French Chemist‚ performed thousands of combustion experiments
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The author in “Just Another Soldier” had a unique message: “I know war‚ have experienced it‚ but accept it though I do not understand it.” A rough message to say the least‚ and it is not without its flaws‚ but it is extremely effective in conveying the idea that war is inherently morbid and close-minded. The author showed us this through his mention of different casualties he had encountered thus far through the course of the war he was engaged in. For example‚ the author mentions that‚ “in situations
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Hydrates Analysis NAME:_____________________________________ PERIOD:_________ Prelab 1. A 6.00g sample of calcium sulfate hydrate (CaSO4.x H2O) is heated until all the water is driven off. The anhydrous compound has a mass of 4.77 g. Calculate the value of x in the formula. 2. For the data in problem number 1 above‚ what is the mass percent water in the hydrate? 3. Calculate the number of grams of water that could be obtained by heating 2.00 g
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flask containing the anhydrous sodium sulfate and was decant on a weighed evaporating dish under the hood. After which‚ it was evaporated to dryness. The residue was weighed and the percentage yield was calculated. The residue for this experiment weighed 1.75 grams. The percentage yield was computed by getting the quotient of the weight of the residue and the weight of the tea leaves‚ and multiplying the result to one hundred. The computed percentage
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streaks‚ if there’s a streak‚ it means that the seal is most likely not air tight. If there are streaks‚ reassemble the apparatus again. b) Why do the joints have to be cleaned before applying vacuum grease? To make sure that the joints have no residues such as oil and that it is not broken. To make sure that it is clean of dirt and any other impurities. c) Ground glass joints have a male and female component. Which component is the grease applied to? The male ground glass joint d) What is the
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REVIEW OF RELATED LITERATURE In a study‚ “Papers and Boards from Banana Stem Waste” in which they used banana stem waste in producing paper and board because banana is a very good source of cellulose. Banana stem waste‚ thrown away by farmers after harvesting of fruits‚ was procured as raw material. It was chopped by 3-4” size usually at a rate of about 100 kg material per day. The material was soaked in 1-2% NaOH for appropriate period. The alkali loosens the ligno-cellulosic bonds‚ thereby
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natural enemies Formulation of EC and WP mix t. vogelii and p. aduncum (1:5) against natural enemies of c. pavonanan i.e. Eriborus argenteopilosus did not cause the death of parasitoid males and females are left in contact with the EC formulation and residue of WP for 24 to 48 hours of treatment (table 6.1). The active ingredient of t. vogelii and p. aduncum are specific and relatively safe against natural predators of e. argenteopilosus. Syahputra (2005) States that the secondary plant compounds more
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Article 1 I direct my personal representative hereinafter named‚ to pay all my just debts and expenses of my last illness‚ funeral‚ burial‚ and estate administration out of the residue of my estate. I further direct my personal representative to pay out of my residuary estate all estate and inheritance taxes assessed against my taxable estate or the recipients thereof‚ whether passing by this will or by other means‚ without contribution or reimbursement for any person. Article II I give the portion
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ENVIRONMENT -COPY OFNOTIFICATION Dated 24th September‚ 2008 Whereas the draft rules‚ namely‚ the Hazardous Material (Management‚ Handling and Transboundary Movement) Rules 2007 was published by the Government of India in the Ministry of Environment and Forest vide number S.O.1676(E)‚ dated 28th September‚ 2007 in the Gazette of India‚ Extraordinary of the same date inviting objection and suggestions from all persons likely to be affected thereby‚ before the expiry of the period of sixty days from
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chemical formula and compare your experimental value to the theoretical value. Background: When potassium chlorate (KClO3) is heated‚ it undergoes chemical decomposition. Oxygen gas (O2) is given off and potassium chloride (KCl) remains as the residue. The equation for the decomposition of potassium chlorate is: 2 KClO3 (s) 2 KCl (s) + 3O2 (g) Other metal chlorates behave similarly when heated; forming oxygen gas and the corresponding metal chloride.
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