Mg2+ Determination using EDTA Linh Nguyen Chem 1212L – 165 Feb 08 ‚ 2014 Purpose and Procedure: The purpose of this experiment is using Compleximetric titration and EDTA to determine the concentration of Mg2+ in solution; and also calculating the percent by mass of MgO in the unknown sample. This procedure results no significant deviations. The procedure for the experiment is from the lab manual referenced below Laboratory Experiments for Chem 1211L & 1212L (6e)
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Ashley Silva Lab 7: Three Stooges in Chemical Reactions Objective: The purpose of this lab is to experimentally determine the equilibrium constant‚ Kc ‚ for the following chemical reaction: Fe3+ (aq) + SCN-(aq) ↔FeSCN2+(aq) Background Information: A system is at equilibrium when the rate of the forward reaction is the same as the rate of the reverse reaction. There is no change in concentration for the reactants or products at chemical equilibrium. When the system is disturbed there
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Practical 3 ________________________________________________________________________ To find the force constant of a spring Objectives: To study the application of Hooke’s Law. To study the forces in equilibrium. To study the resolution of vector quantities. Apparatus and Materials: 1. Spring 2. Plumb-line 3. Protractor 4. Slotted masses 100g with hanger 5. Thread 6. Retort stand 7. Nail or pin Setup: 1. Set up the apparatus as shown in Figure 4-1 below. 2. Adjust the spring
Free Force Mass Robert Hooke
Many people will believe that ambitions are often achieved with the individual’s’ constant and continuous positive desire to achieve a goal‚ but it is truly the determination of one’s self towards a certain goal that allows them to achieve the success they intend. Through the inspirational story of Lance Armstrong‚ determination was significantly portrayed as the main motive that has driven him to overcome obstacles‚ both physically and mentally. With his previous achievement of overcoming an aggressive
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Experiment A Spectroscopic determination of Iron with Phenanthroline Unknown # 2 Mass of Mohr’s Salt: 0.2040 1. 5mL of 6M acetic acid was measured and transferred into a 100mL volumetric flask with a pipette and diluted to the mark. Concentration = [0.2040(±0.0001)g/100(±0.08)mL]*[(1mol/392.16g)/(1L/1000mL)] = 0.005202(±0.09382%) = 0.005202(±0.000005)mol/L 2. 10mL of the above stock solution was transferred to a 250 mL volumetric flask and diluted to the mark. Concentration
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What is Beauty? Beauty can be seen differently by every single person in the world. Though people see beauty differently there are specific features the world universally sees as beautiful. There are a few scientific determinants of how attractive a person is and the society and culture a person lives in can contribute to how one person perceives beauty. To determine a person’s beauty it is up to someone to decide what the most important feature of a person is. A person may believe someone’s
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Objectives To study the quantitative relationship between the amount of reactants and products of a reaction ( that is how many moles of A react with a given mol of B). A known starting mass of magnesium and the measured collection of hydrogen gas will be used to determine the reaction stoichiometry and the valency of magnesium Introduction Stoichiometry is the study of the quantitative relationship between amounts of reactants and products of a reaction. Stoichiometry can be used to calculate the
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Self determination means the right to determine ones own life. Client self determination in the context of modern day social work relates to the idea that we want our work to be anti oppressive and to empower our clients. It’s a theory that requires that we respect our client’s rights and dignity and we believe that nobody is more qualified to run their lives but them. The Australian Association of Social Workers Code of Ethics (AASW) outlines the role of the social worker and puts in place ethical
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Linn Bailey once said‚ “If you have discipline‚ drive and determination nothing is impossible.” If you put your mind to anything‚ and have confidence you can accomplish things. When you let the hard times get to you it will bring your confidence down. Determination will help you get through the hard times even if you don’t think you can overcome them. In the book No Safe Place‚ the author uses conflict to develop the theme; Determination is key‚ even if you are doing it all by yourself. For example
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Identifying a Salt by Creating its Heating Curve Introduction: Solubility is a substance’s ability to be dissolved in a liquid‚ usually water‚ and some substances are more soluble than others. A solution can be saturated‚ unsaturated or supersaturated. Temperature plays a large role in the solubility of substances. For example‚ on table G of the Chemistry reference tables it shows that 10g of KClO3 will dissolve in 100g of water at about 25°C‚ but at about 48°C‚ 20g will dissolve. The higher the
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