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An artificial membrane of thickness 0.1 mm separates two well-mixed fluids containing sucrose. The concentration of sucrose on side A is 10 mM and the bulk concentration on side B is 2 mM. The partition coefficient for sucrose in the membrane relative to fluid A is 0.3 and the partition coefficient for sucrose in the membrane relative to fluid B is 0.2. The diffusion coefficient of sucrose in the membrane is 3.6x10-10 m2/s. Find the permeability of the Membrane for transport from side A to side B. Would the magnitude of sucrose flux through the membrane be the same if the fluid concentrations were reversed?
a walk-in cooler using a vapor compression refrigeration cycle is configured as shown below. the cycle uses cfc22 or
a frictionless piston-cylinder device fitted with stops above the piston contains 1.2 kg of air at 200degc and 700 kpa.
the wheel in fig. 10-27 has eight equally spaced spokes and a radius of 30 cm. it is mounted on a fixed axle and is
a sample of silty clay has a volume of 14.88cm3 a total mass of 28.81 g a dry mass of 24.83 g and a specific gravity of
What is the composition of the alloy and what is the temperature at which the first solid phase solidifies? (Estimates rounding to convenient numbers are sufficient.)
water is the working fluid in an ideal rankine cycle. superheated vapor enters the turbine at 8 mpa 450 degc. the
a 20-mm diameter rod made of a ductile material with a yield strength of 350 mpa is subjected to torque of 100 n.m and
A. When the two torques are applied to the composite shaft, determine: the maximum shear stress magnitude in aluminium tube (1), the rotation angle of joint B and c.
a fixed quantity of air at t1 100oc and p1 243 kpa is heated at constant pressure in a piston-cylinder assembly to t2
blood at 37degc enters the left ventricle lv of a skier at a rate of 100 mls. at time t 0 the skier steps outside and
in a particular location the horizontal component of the earths magnetic field has a magnitude of 2.00 10-5 t. an
if block d weighs 300 lb and block b weighs 275 lb, determine the required weight of the block c and the angle theta for equilibrium.
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