less DNA that will be broken down allowing us to view the DNA in the test tube. III. Hypothesis: If you add certain chemicals to the smashed up strawberry the sticky DNA can be retrieved from within the cells because of ethanol put into the mixture. IV. Experiment: A. Variables: i. Independent- strawberry ii. Dependent- The DNA iii. Controlled- Extraction solution and ice cold ethanol B. Materials: * Strawberries * Test tubes and test tube rack * Extraction
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(vi) Ion-induced dipole interactions [20(b)] In these interactions ion’s field induces a dipole moment in a molecule. If μ is the induced moment in a field E‚ ‘α’ is the polarizability (assumed to be constant)‚ then (26) (27) where FZ is the instantaneous force on the induced dipole (R >> δ) and the interaction energy at a given R‚ is (28) As the induced dipole is parallel to the field
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Worshteshire sauce) 1 tsp ground pepper 2 tbsp sugar Procedure: 1. Mix all ingredients 2. Scoop a mixture using a tbsp‚ put it into the wax paper/cling wrap and roll the wrap and shape it like a sausage‚ mini sausage.The wrap will serve as a the longanisa cover and to separate one from the other‚ and it should be removed before frying. OR if you want to eat it immediately‚ scoop a mixture‚ shaped it like a sausage or any shape you want‚ then fry them. 3. Store longanisa in the freezer (2 to
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chromatography. All chromatography experiments involve passing a mixture of analytes through a system that includes a mobile phase and a stationary phase. The partitioning of the analytes between these two phases determines the rate at which they pass through the system‚ and (in theory) allows them to be separated from one another. Column chromatography is a technique routinely used by organic chemists to separate sometimes complicated mixtures of compounds. For example‚ a chemical reaction may produce
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(S)-ethyl lactate produces a mixture of diasteromeric esters of ibuprofen derivatives where (S) configuration is predominantly. Finally‚ hydrolysis of the ester then provides (S)-ibuprofen in a relatively high yield. all reaction were monitored by TLC at room temperature with appropriate solvent system which states in experiment section. IR‚ 1H-NMR‚ 13C-NMR‚ polarimetry and melting point range were used to define the product and its purity. Introduction Racemic mixture of ibuprofen is sold in the
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98.) Consider the unbalanced redox reaction: Cr2O72- (aq ) + Cu(s ) → Cr3+ (aq ) + Cu2+ Balance the equation in acidic solution and determine how much of a 0.850 M K2Cr2O7 solution is required to completely dissolve 5.25 g of Cu. Nitric acid is usually purchased in concentrated form with a 70.3% HNO3 concentration by mass and a density of 1.41 g/mL. How much of the concentrated stock solution in milliliters should you use to make 2.5 L of 0.500 M HNO3? Mass %= Mass Solute/ Mass Solvent + Mass
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metal and water at 500oC. 2. The equilibrium constant Kc for the reaction: 2HCl(g) ⇄ H2(g) + Cl2(g) is 0.0213 at 400 oC. If 20.0 moles of HCl(g) are heated at 400 oC‚ what amounts of HCl(g)‚ H2(g) and Cl2(g) would be present in the equilibrium mixture? (H2 = Cl2 = 2.26 moles; HCl = 15.48 moles) 3. The equilibrium constant Kc for the reaction: 2CO(g) + O2(g) ⇄ 2CO2(g) is 2.24 x 1022 at 1273oC. Calculate the Kp for the reaction at the same temperature. (1.76 x 1020) 4. A 2.50 mole
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Based on the graphs displaying the number of vacuoles formed in presence of the yeast cells within the yeast and ink mixture‚ our null hypothesis was rejected because both the yeast cells and India ink had a significant effect on the tetrahymena as illustrated by the number of vacuoles that were form when those two substances were fed to the tetrahymena. One factor from
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Engineering B45 Concrete Lab Report Introduction: Concrete is a mixture of sand and rock or similar inert material (aggregates) held together by a cementing material. Usually the cementing material is Portland cement‚ but sometimes binders such as asphalt or gypsum are used‚ in which case the concrete may be called asphaltic concrete or gypsum concrete. Properties of concrete are governed not only by the properties of its ingredients (cement‚ water‚ sand‚ and coarse aggregate) but also‚ to a great
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It was suspected that E + F would form lithium phosphate‚ which forms a precipitate extremely slowly‚ and needs to be heated to react faster. As expected‚ heating the mixture of E + F did indeed reveal the formation of a precipitate‚ confirming the student’s initial suspicions. This accounts for one of the two possible major errors that the student could have made in this part of the experiment‚ the other one being accidentally
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