A welded steel cylindrical drum made of a 10-mm plate has an internal diameter of 1.20 m. Compute the change in diameter that would be caused by an internal pressure of 1.5 MPa. Assume that Poisson's ratio is 0.30 and E = 200 GPa.
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- maWhat mass of nickel (in gm) could be formed in a solution of nickel (II) chloride by passing 0.25 amperes for 10 hours. (At.wt. Ni= 58.7, Cl= 35.5 ) ? NICI + 2e Ni + 2CIQ.2. The purification of hydrogen gas by diffusion through a palladium sheet: Compute the number of kilograms of hydrogen that pass per hour (kg/h) through a 5-mm-thick sheet of palladium having an area of 0.25 m² at 500°C. The concentrations at the high- and low-pressure sides of the plate are 2.4 and 0.6 kg of hydrogen per cubic meter of palladium, and that steady-state conditions have been attained. Diffusion coefficient D= 1x10 m²/sTaking into account the following reaction mechanism 0,0₂ +0. 0.+0₂ 0₁ 0₂ +0.-20₂ Write the differential equations for all existing chemical species.
- hello, i sent this question before but the answer you rpovided for both wasnt right and i couldnt undertstand how you got the answer. can you please show me a handwritten solution for better understanding. 1a) The decomposition of ethanol at some constant temperature (above 500°C), over a copper surface, C2H5OH(g) CH3CHO(g) + H2(g) was studied by monitoring the total pressure with time.The following data were obtained: t (s) Ptotal (torr) 0 120 45 131 139 154 233 177 376 212 380 213 What will be the total pressure at t = 462 s? 1b) What is the rate constant (k)?(Include appropriate units.)Benzene on graphite follows the Langmuir isotherm. At a pressure of 1 atm, theThe volume of benzene adsorbed on a sample of graphite was 4.2 mm3 atconditions T = 0°C and 1 atm. At 3 atm it was 8.5 mm3. Suppose 1 molecule ofbenzene occupies 30Å and estimate the surface area of graphite.The number of vacancies N, in a crystal can be calculated using the Arrhenius equation: N₁ = Ne Ev / KT where N is total number of atoms, Ev is the activation energy for vacancy formation, and k is the Boltzmann's constant and Tis the temperature. Boltzmann constant k = 8.62 x 10¹5 ev/K a) What are the units of 7? b) What are the units for Ev? c) Under what conditions can a crystal have no vacancies?
- Determine the lifetime of NO2 at night against the reaction NO2+ 03 → NO3 + 02 at z= 0, 5, and 10 km. Assume an O3 mixing ratio of 50 ppb.What are the units for each parameter? maximum velocity Michaelis-Menton constant catalytic efficiency catalytic constant 111 M/S M 1/(Ms) 1/s M/s 100/(Ms)The kinetics of the selective hydrogenation of styrene to ethylbenzene over palladium (Pd) catalyst supported on an organic-inorganic composite support was studied (Betti, et al., 2016). Compute the pressure, P required to carry out the reaction when the temperature was fixed at 900 K and 2 moles of hydrogen initially present for each mole of styrene. The degree of reaction is 0.698. Given that the gas constant, R is 8.314 J/mol.K. Assume ideal gas. Additional information can be found in the Appendix attached. CgH;CHCH;(9) + H;(9) – CgH;CH;CH3(9) Styrene + Hydrogen – Ethylbenzene
- Calculate delt g for Pbl2(s) + Pb2+(aq) +2I-(aq) T= 25C Kp= 8.7x10-9A monolayer of N2 molecules is adsorbed on the surface of 1.00 g of an Fe/Al2O3 catalyst at 77 K, the boiling point of liquid nitrogen. Upon warming, the nitrogen occupies 3.86 cm3 at 0 °C and 760 Torr. What is the surface area of the catalyst? Use the value of the collision cross-section for N2 (from the Resource section) as an estimate for the area of a molecule.= 14 15 16 17 18 19 20 21 22 23 24 25 26 A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas reaction vessel. The vessel is a stainless-steel cylinder that measures 39.0 cm wide and 46.8 cm high. The maximum safe pressure inside the vessel has been measured to be 8.50 MPa. For a certain reaction the vessel may contain up to 5.53 kg of boron trifluoride gas. Calculate the maximum safe operating temperature the engineer should dlo recommend for this reaction. Write your answer in degrees Celsius. Round your answer to 3 significant digits. temperature: || °C