relationship is _____________________ proportional. Initially‚ there is 275mL 0.125M stock solution of a substance. -Determine the amount of moles of solute present. -What is the concentration after a dilution when the final volume is 2.50L. Box 2 Instead of completing 2 calculations for each time a dilution is calculated‚ scientists use the _________________________________________. _______________________=______________________ Double check the formula using the previous problem. -Initially‚ there is 275mL
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traveled Results: Table 1: TLC Analysis Analgesic Drugs | Rf Value | Acetaminophen | 0.323 | Aspirin | 0.597 | Caffeine | 0.081 | Unknown 154 (Plate 1) | 0.081‚ 0.306‚ 0.597 | Ibuprofen | 0.698 | Salicyclamide | 0.587 | Unknown 154 (plate 2) | 0.079‚ 0.397‚ 0.587 | Discussion: The goal of this experiment was to use TLC Analysis to determine the analgesic drug present in the unknown solution 154. One observation of the unknown spotting solution was that it was cloudy. After forming
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01325x105 Nm‐2‚ 1m3 = 1000 L J R = 8.314 mol x K = R = 8.314 2 m x mol x K R = 0.082 atm x L mol x K 1.01325 x 10 2 m x mol x K 1 x Nxm = mol x K 3 Nxm 3 Nxm 5 atm Nm-2 x 1000 L 3 m Reporting computed data • Multiplication and Division 5.02 x 89.665 x 0.10 = 45.0118 How many significant figures should we take for the answer? The relative uncertainty of each numbers = 45.0118 x = 4.50 ‚ 45.0118 (2 sig. figures)
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leader should try his best to make his staff feel a strong sense of belonging by letting them in during the decision-making process. 观点： 1 seeking for advice from other people prevents dictatorship‚ that is to say‚ protects the disadvantaged team. 2. an effective leader can better motivate his team members by bringing them in the decision making. 3. Most importantly‚ it can maximize the group interests. 范 文 Nowadays team collaboration has played a pivotal vehicle of success of an organization
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Copper (II) sulphate Ammonium chloride Zinc sulphate Basic copper (II) carbonate‚ CuCO3. Cu(OH)2 Blue and red litmus and a splint METHOD: 1. About 1g of the solid was placed in a dry test tube and the test tube and its contents was heated in a burner‚ gently at first the strongly. During the heating the test tube was sloping slightly downwards. 2. Gases were tested and evolved with moist blue and red litmus and with a glowing splint 3. The results
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References: 1. Ion exchange resin. [Online]. Available: www.britannica.com/EBchecked/ topic/292829/ion-exchange-resin 2. Structure of EDTA. [Online]. Available. en.wikipedia.org/wiki/File:EDTA.svg 3. Structure of Murexide. [Online]. Available. en.wikipedia.org/wiki/File:Murexide.png
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Experiment 1 : Redox Titration Using Sodium Thiosulphate Abstract This experiment is to determine the concentration of oxidizing solution using the iodine/ thiosulphate titration where the reducing solution is potassium iodate solution and the oxidizing solution is sodium thiosulphate solution. Potassium iodate solution which is an oxidizing agent is added into an excess solution of acidified potassium iodide. This reaction will release iodine. Potassium iodide is acidified with sulphuric acid
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planar 120° 33% s-character‚ 66% p-character sp i.e. CO2 2 regions of e- linear 180° 50% s-character‚ 50% p-character Orbitals Einstein: photoelectric effect → photons de Broglie → wave-particle duality Schrodinger → wave functions ?→ orbitals Atomic orbitals Simple Molecular Orbital Theory # MO’s = #AO’s MO’s arranged by relative E Filling follows (1: Aufbau‚ 2: Pauli) Bond Order (e- in bonding orbital - e- in antibonding) / 2 Valence Bond Theory places e- pairs between atoms problems
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Phase 3 IP CTU Online MGMT600-1301A-05: Applied Managerial Decision-Making To use the Chi-square distribution‚ the quantitative variable sales volume has to be converted into categories or groups such as “Achieved Target” vs. “Did not achieve target”. 1) A chi-square test that can be carried out in this context is to see whether the automated contact system affects whether or not the sales force achieve their targets. Null Hypothesis (HO): There is no relationship between
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more than the blue‚ so the solution appears blue. The tetraamminecopper(II) cation is the principal copper species present in ammonia solution of concentration 0.01 to 5M. However‚ at lower concentrations of ammonia‚ other copper species having 3‚ 2 or 1 molecules of ammonia may be present. At higher concentrations of ammonia‚ a
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