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- Calculate the molar susceptibility of cyclohexane given that its volume susceptibility is −7.9 × 10−7 and its mass density is 811 kg m−3 at 25 °C.What are the main advantages and limitations of the Valencia Linkage Theory?1.At -185°C and 1 atm ethane (MW = 30.07 g/mol) exists as a solid with a FCC structure. Using the data provided below: E/k=194.1K, bo=0.1794 m3/kmol Determine the diameter of one molecule of ethane (in angstroms). 2. What is the void fraction? 3. Find the density of the solid etahne. 4. Calculate the distance of separation (in m) between two ethane molecules when the potential energy is at a minimum. 5. At the separation distance calculated in part (4), determine the minimum value of the potential energy between two molecules (in J).
- Calculate the molar susceptibility of benzene given that its volume susceptibility is −7.2 × 10−7 and its mass density is 0.879 g cm−3 at 25 °C.When the temperature is 20 ° C, water flows through an ostwald viscometer at 363 s, whose density and viscosity are given as 0.9982 g / cm3 and 1,000 cP, respectively. The flow time of OF2 from the same viscometer at -145.8 ° C was measured as 68 s. Since the density of OF2 at this temperature is 1.523 g / cm3, what is the value of its viscosity?Is structure 4 or 2 the correct option due to sn2 inversion ?
- The donor level associated with the nitrogen lies about 1.7 eV below the conduction band. How does this donor level arise? Why do natural diamonds do not behave as semi-conductors?At 0 °C, the molar polarization of a liquid is 32.16 cm3 mol−1 and its mass density is 1.92 g cm−3. Calculate the relative permittivity of the liquid. Take M = 85.0 g mol−1.3..Suggest how to make syndiotactic/isotactic polystyrene on the one hand and on the other hand how to synthesize atactic polystyrene. Justify your statement.
- What point defects are possible for Al2O3 as an impurity in MgO? How many Al3+ ions must be added to form each of these defects? Explain.The diffusion coefficient of I2 in hexane at 25 °C is 4.05 × 10−9 m2 s−1. Estimate the time required for an iodine molecule to have a root mean square displacement of 1.0 cm.Using 0.901 g/cm3 for density of tri - isopropylsilanol (i-C3H7)3SiOH and assuming spherical shape of the molecule, determine its molecular cross section and the maximal grafting density for these molecules supported on a flat silica surface.