Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
1) A 5mm thick sheet of palladium with a cross sectional area of 0.2m^2 is used as a steady-state diffusion membrane in order to purify H2.The H2 concentration on the high pressure side of the sheet (i.e., the impure H2) is 1.5kg/m3 and that at the low pressure side is 0.3kg/m3. The diffusion coefficient for H2 in palladium is 1x10^-8m2/s. Assume a linear concentration profile within the plate. Calculate the mass of H2 being purified per hour.
2) If a (carburizing) carbon-containing gas diffuses under the surface of a steel shaft, the concentration of carbon under the surface will increase with time as the process proceeds. The steel shaft initially has a carbon content of 0.2wt%. Calculate the time, in minutes, necessary to increase the carbon content to 0.4wt%, at a distance of ½mm below the surface. The temperature is 1700°F. The carbon content at the surface is 0.892wt%. The diffusion coefficient at 1700°F is 1.28×10^-11m2/s.
3) In copper, at 25C, the ratio of vacant sites to the total number of sites is 4.52×10-6. What is that ratio at 450C?
water is heated in a piston-cylinder arrangement where p const. from the saturated liquid state to the saturated vapor
a balloon is to be filled from a helium tank. the tank is large and the tank pressure remains effectively constant
liquid ammonia is stored in a tank at 24 deg c and a pressure of 2.4 x 106 pa absolute. a leak develops at the bottom
a liquid film is suspended on a rectangular wire frame. the length of the movable wire is 2 in. and the other dimension
derive an equation for the work of a mechanically reversible isothermal compression of 1 mole of a gas from an initial
a curve in a speed track has a radius of 1000ft and a rated speed of 120mih. knowing that a racing car starts sliding
Two flat, rectangular plates with a lateral dimension w*l lie parallel, one above the other, a distance h apart. The gap between them is filled with molten polymer.
a spur pinion d 100 mm has a torque of 225 nm applied to it. for pressure angle of 20 degreea. calculate wt wn and
hydrogen at 25 bar 450degc enters an adiabatic turbine and expands to 2 bar 160degc with a mass flow rate of 0.2 kgs.
A mild structural steel beam has a solid square cross section of 100mm and is simply supported by 2 supports 3m apart. A. Calculate the dead load that can be safely supported when applied to the middle of the beam?
in an oil refinery methane gas ch4 enters a compressor at a steady rate of 0.9 kgs and at a pressure 2 bar temperature
a piece of electronic equipment that is surrounded by packing material is dropped so that it hits the ground with a
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd