Either burn sulphur in air: S (s) + O₂ →SO₂(g) Or heat sulphide ores strongly in air: 4F eS₂(s) + 11O2(g)→2F e₂O₃(s) + 8SO₂(g) Stage 2: Making sulphur trioxide Now the sulphur dioxide is converted into sulphur trioxide using an excess of air from the previous process. 2SO₂ + O₂⇌2SO₃(g) △H =− 196kJ mol ¹ Anissa Davis 32130161 Further reactions In this reaction an excess of oxygen is used‚ because it is important to make sure that as much sulphur dioxide as possible converted into sulphur trioxide
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Acid-Base Titration Objectives: 1. To titrate a hydrochloric acid solution of unknown concentration with standardized 0.10M sodium hydroxide. 2. To utilize the titration data to calculate the molarity of the hydrochloric acid. Materials: See handout for more info. Procedure: See handout for more info. Data and Calculations: Table 1: Volume of NaOH Required to Neutralize 10.00mL of Unknown HCl Molarity of NaOh | Trial 1 | Trial 2 | Trial 3 | Trial 4 | Initial Volume of NaOH(mL)
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What I found from my data proves my hypothesis to be correct. Since HCL has already a wide amplitude of ions‚ where the addition of sodium chloride just increases the overall ions in the solution‚ hence more conductivity; since electrons are moved through ions. What
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Philippine Normal University College of Language‚ Linguistics and Literature Department of English Text Book Evaluation In partial fulfillment of the requirements in ELT 505: Preparation and Evaluation of Instructional Materials Submitted by: Noveras‚ Ellen P. 02 October‚ 2010 Introduction English for a Better World III‚ An Interactive‚ Collaborative and Integrative Worktext
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(culture medium‚ temperature‚ pH‚ etc.)‚ define the bacterium’s generation time. Generation times for bacteria vary from about 12 minutes to 24 hours or more. The generation time for E. coli in the laboratory is 15-20 minutes‚ but in the intestinal tract‚ the coliform’s generation time is estimated to be 12-24 hours. For most known bacteria that can be cultured‚ generation times range from about 15 minutes to 1 hour. Symbionts such as Rhizobium tend to have longer generation times. Many lithotrophs‚
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Trisheena Harricharran 4/1/13 Miguel Perez Chem 106 Sec 006 Observations Materials: * Barium Iodide- White and powdery * Zinc Sulfate- White and powdery * Boiling Chips- Tiny‚ grey and rock like Experimental Observations: Barium Iodide used- .63g Zinc Sulfate used- .45g Boling Tube with 2 boiling chips- 41.52g Barium Iodide in solution with 2 mL of deionized water looks cloudy. Zinc Sulfate in solution with 2 mL of deionized water is clear. Barium Iodide
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Acid/ Base Titration Lab Design III Materials: Goggles HCl NaOH Distilled Water Label Beaker Graduated Cylinder Pipet Stirring rod Buret with clamp Stopper Ring Stand Utility Clamp Computer Computer Program pH probe Procedure: 1) 2) Goggles were put on. 3) 0.1 M NaOH solution was made using 0.4 g NaOH and 100 mL distilled water. The ingredients were added together in a beaker and stirred. 4) The buret was standardized by adding 10 mL of distilled water‚ rolling
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cash flows in future period; * The company’s ability to meet its obligations and to pay the dividends; * The company’s need for external financing; * Reasons for differences between the amount of net income and the related net cash flows from operating activities; * Both the cash and non cash aspects of the company’s investment and
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Acidity’s effects on Fruit Browning Aim: To test whether the acidity of the surface area of an apple has an effect on the rate of enzymatic browning over 70 minutes. Hypothesis: the more acidic the surface area the longer it takes for the fruit to oxidise. Variables: Independent: acidity of surface area of the apple Dependent: the progression of melanin (brown pigment) after 70 minutes Controlled/fixed: time of day‚ knife used to cut fruit‚ portion of fruit‚ environment
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twice—first to secure a Vote on Account for a few months and later in full. Distribution of Budget Papers 4. In the case of the Railway Budget‚ the sets are distributed to members from the Publications Counter after the Railway Minister has concluded his speech. The sets of General Budget are distributed to members from several booths in the Inner and Outer Lobbies arranged according to
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