If a single molecuke of stearix acid covers an area of 0.21nm^2 how many stearic acid milecukes will it rake to cover the surface area if the petri dish
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- At an air-water interface, fatty acids such as oleic acid liein a one-molecule-thick layer (monolayer), with the heads in thewater and the tails perpendicular in the air. When 2.50 mg of oleic acid is placed on a water surface, it forms a circular mono-layer 38.6 cm in diameter. Find the surface area (in cm²) occu-pied by one molecule (of oleic acid M=283 g/mol).What is the main difference between molecular diffusion and mechanical dispersion in terms of contaminants moving through unsaturated and saturated groundwater?You are required to prepare 5 L of a solution containing 1.000 x 103 mol/L of Cu2"(aq). Which of the following procedures would produce an appropriate solution? O Dissolve 0.0636 g of copper metal in nitric acid, add to a 5.000 Lvolumetric flask, dilute to the mark with deionized water and mix well. O Dissolve 1.248 g of CuSO.5H,0(s) in deionized water, add to a 5.000 L volumetric flask, dilute to the mark with deionized water and mix well. Dissolve 0.250 g of CUSO,.5H,O(s) in deionized water, add to a 5.000 L volumetric flask, dilute to the mark with deionized water and mix well.
- You make a calibration curve using dilute concentrations of dye and determine the equation of the line is y = 7.325 x. If the pathlength of the machine you are using is 1 cm, what is ε in Beer’s law for this solute? What are its units?逐步解决 不使用人工智能出色完成工作 非常感谢您的支持 SOLVE STEP BY STEP IN DIGITAL FORMAT DON'T USE AI | DON'T USE AI | DON'T USE AI | DON'T USE AI | 2. An ethyl alcohol solution that is 75% alcohol by weight is to be used as a bactericide. The solution is to be prepared by adding water to a 95% ethyl alcohol solution. How many grams of each should be used to prepare 400 grams of the bactericide?KMnO4 and Na2C2O4 solutions were used in the reactions that took place in a back titration to determine the amount of H2O2 in a sample. Calculate the concentration of H2O2 in the sample (w / v) as% by making appropriate assumptions for the volumes and normality of all these solutions.
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- a solution containing 4.20x10^23 molecules/m^3 of protein is separated from pure water by a membrane 2.98 think the diffusion coefficient of the proteins through the membrane is 3.30x10^-18m^2/s. on average how many molecules cross 0.0260 of this membrane each secondthe ksp of calcium hydroxide is 4.86x10^-6Determine the distance traveled by the solvent if the solute travels 3.1 cm. The weight of the analyte measures 0.984 mg with an Rf value of 0.647. Note: Express answers up to TWO decimal places. Distance traveled by the solvent = cm