Determination of specific heat Capacity of a solid by electrical method Introduction Thermal conductivity heat is transferred as a consequence of temperature difference between 2 bodies‚ heat energy passes form a hotter to the colder body. Specific heat capacity is the amount of heat energy required in joules to raise 1kg of a substance by 1 degree Celsius‚ different substances absorb heat energy at different rates not all substances require the same amount of heat energy to increase the
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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 is a shift to reestablish equilibrium explained
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Spectrophotometric Methods: The Determination of Iron The goal of this laboratory experiment was the quantitative spectrophotometric determination of Fe (II) by using a calibration plot‚ which obeyed the Beer-Lambert Law. In order to determine the Fe (II) concentration‚ a series of solutions of known concentrations were made. The solutions were analyzed by the Ocean Optics spectrophotometer in order to determine their absorbance. The concentration of the unknown Fe (II) was determined by the “eye-ball”
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Experiment (6) Determination of ash content Aim: To determine the ash content in 5 samples of milk Principle: This experiment wills comparison between all samples. We will weight three times. First type the weight of crucible. The second is crucible and the sample the last about the weight of ash after removing from furnace. Apparatus: 1. clean crucibles 2. Analytical balance 3. Clean tongs 4. Tripod 5. Bunsen burner 6. Silica triangle Instruments: 1. Furnace Procedure:
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When speaking in terms of legalized euthanasia‚ and self-determination‚ Callahan feels that people should make decisions for themselves according to their own beliefs as to what comprises the good life. (pg. 226) He also states that we will‚ one way or another‚ die of some disease and that death will have dominian over all of us. (pg. 227) The meaning of this is no matter what we are all destined to die. In the case of death he first looks at suicide. This is when a person takes his or her own
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Determination: the ability to strive for and accomplish a set goal. Determination is one of the most important trait anyone can have. It helps you succeed and overcome any boundaries thrown your way. Determination is so significant because without it many feats wouldn’t have been accomplished. It can help people succeed no matter what obstacles they have to face. First‚ if no African-American had revolted against the status quo and been determined to end all the injustices that African Americans
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minerals. These micronutrients are required in very small amounts to allow normal metabolism‚ growth and physical well-being. Most are not made in the body so they must be obtained in the diet. Milk‚ a staple food and excellent source of protein and calcium‚ serves as an excellent carrier for these essential micronutrients. On the family brands‚ Cowbell and Loya‚ we have added a specially formulated pre-mix of vitamins A‚ C‚ D‚ E and K. In Cowbell Chocolate milk‚ a similar vitamin pack has been added
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CHEM 1105 Experiment 4: Determination of a Chemical Formula Introduction When atoms of one element combine with those of another‚ the combining ratio is typically an integer or a simple fraction. The simplest formula of a compound expresses that atom ratio. When two or more elements are present in a compound‚ the formula still indicates the atom ratio. To find the formula of a compound we need to find the mass of each of the elements in a weighed sample of that compound. For example‚
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CHM 3120L ANALYTICAL CHEMISTRY I LABORATORY REPORT EXPERIMENT: SPECTROPHOTOMETRIC DETERMINATION OF IRON IN DRINKING WATER Name: Steven Adrien Section: 3 Date Experiment Completed: Wednesday‚ July 17‚ 2013 1. Complete the following table Fe(II) stock solution | mass‚ g | 0.1756 | volume‚ mL | 500.0 | MW(Fe(NH4)2(SO4)2 x 6H2O)‚ g/mol | 392.14 | AW(Fe)‚ g/mol | 55.85 | conc. Fe(II)‚ ppm | 50.0 | Use Equation Editor to show how you calculated the concentration of Fe(II)
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Volume of HCl (mL) | | | Initial | Final | | 1 | 0.2123 | 0.00 | 42.34 | 42.34 | 2 | 0.2195 | 0.00 | 47.24 | 47.24 | 3 | 0.2049 | 0.00 | 26.65 | 46.65 | After Boiling | 1 | | 31.52 | 32.22 | 0.70 | 2 | | 29.34 | 30.61 | 1.27 | 3 | | 30.61 | 31.52 | 0.91 | Week 2: Determination of Sodium Carbonate in the unknown via titrating using bromocresol indicator Sample number: SC 8 Table 2: Titration of the unknown using hydrochloric acid Trial | Mass of unknown (g) | Burette
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