to the appropriate significant figures. 15-1 Molarity Problems: (M = moles/ liter ) 1. What is the molar concentration of a 415 ml solution containing 0.745 moles of HCl? (A: 1.80 M HCl) 2. What is the molar concentration of an acetic acid (CH3COOH) solution containing 3.21 moles in 4.50 liters? (A: 0.713 M) 3. How many moles of KI are present in 125 ml of 0.500 M KI? (A: 0.0625 mol KI) 4. How many moles of ammonia (NH3) are present in .360 L of 2.13 M NH3 solution in water
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will show a colour change. After that record the initial reading of the burette and making sure that all your burette readings must be to an appropriate precision. Titrate the contents of the conical flask by adding to it 0.100 mole dm3 hydrochloric acid from the burette. Add the solution slowly. Swire the flask gently to mix the contents at the end indicator turns as define red colour. This is the end point of the titration. Record the final burette reading in your table of result. Repeat the titration
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Therefore‚ the experiment was performed to conduct quality control analysis on two commercial products to determine the amount of acid or base active in these two products and then compare the results to those of the manufacture. This was done through the preparation of standardized acid solution and standardized base solution‚ and through titration. The purpose of titration was to determine the concentration levels of the commercial products being used.
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Acid-Base Titrations A Titration of Potassium Hydroxide Phthalate and Sodium Hydroxide Hanna Piper Department of Chemistry‚ SUNY College at Brockport‚ Brockport‚ NY 14420 Chemistry 205.06 Abstract Titrations are used to find the molarity of an unknown solution. A titration begins with an analyte and titrant being used to measure the unknown molarity of the analyte. In the following experiment‚ sodium hydroxide was used as the titrant and potassium hydroxide phthalate was used as the
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Officer Separation Board (OSB) Temporary Early Retirement Authority (TERA) The ongoing draw-down of active duty Army will affect captains and majors. The Army’s draw-down plan is a "balanced approach that maintains readiness‚ while trying to minimize turbulence to the officer corps” states Dave Martino‚ director‚ Officer Personnel Management Directorate at Human Resources Command. Officer Separation Board (OSB) process begins March 2014 for qualified captains in year
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By : Kaantha Rooban Subramaniam Subject : Law and Ethics in Mass Communication What is rules of separation of power and to what extent it is observed in Malaysia? As we all know‚ Malaysia is a country that practices Parliamentary Democracy and Constitutional Monarchy since achieving independence from British rule on August 31‚ 1957. The structure of government in Malaysia is very similar to what is practiced in Great Britain. This is due to the fact that the Malay Peninsula‚ as Malaysia was
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SCRUBBER DESIGN (PACKED COLUMN) Prepared by : Column Tag No. : HCL Scrubber Checked by : Job No. : 4506A Date : Client : JOL Project : SR - Plant -4‚ 5 Input Data Stream : HCL Vap. Packing type = Intallox Saddles Packing size = 25 mm Packing MOC = PP
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Acids and Bases Shane Purpose- To study the relationship between pH and metabolism. 10/21/13 Materials- see attached Per. D Biology Procedure- see attached Data and Results- see attached Theory- PH stands for the power of hydrogen. People refer to the pH scale as a tool for finding out if a substance is acidic‚ basic‚ or neutral. This scale goes from zero to fourteen. The number seven is neutral. Any number higher than seven on this scale is basic. Any number lower is acidic
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rights and freedom are twin pillars of the rule of law. Without the separation of powers‚ neither of these principles would be realized. Governments perform three functions namely executive‚ judicial and legislative functions. The role of separation of powers involves the diffusion rather than concentration of powers within the state. Thus‚ these branches should be separate‚ unique and equal. The underlying principle of the separation of powers is that individuals have the potential to harm others
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benefitted most when raised by their two biological and married parents‚ who have low conflict relationships (Parke). Income changes‚ paternal absence‚ and poor maternal mental health are all adverse outcomes that are commonly linked to parental separation‚ however‚ studies show that the majority of children in single parent families grow up without serious problems. Single-parent families are much more common today than they were half a century ago. Rates have increased across both race and income
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