an ethanol (a)-water (b) solution in the form of a stagnent film 2.0 mm thick at 293 k is in contact at one surface with an organic solvent in which ethanol is soluble and water is insoluble. hlence, nu-0. at point i the concentration ethanol is 16.8 wt % and the solution density is 972 8 kg/m'. at point 2 the concentration of ethanol is 6.8 wt % and the solution density is 988.1 kg/m'. the diffusivity of ethanol is 0.740 x 10 m/k calculate the steady state flux n, in 36 hours.

The sample with the lowest specific heat capacity will have the greatest temperature increase. in this case, it would be platinum.

Pe = 1/2k(x)^2  and .05n/m = .05x10^-9m = x 

W= fd
where f is an applied force and d is the distance over which it is applied. when a parachuting skydiver is at constant velocity, he is experiencing "terminal velocity", the point at which his acceleration down is canceled out by air resistance. that means that the resisting force of the air is equal to his weight, but in the opposite direction. with this, we can solve for the work done by the force.
w = fd
w = (92.0)(9.81 m/s^2) (325)
w= 2.93 x 10^5 j
the value for work in this case is positive because it is pushing up on the skydiver, who has a downward force of gravity.
therefore the answer is 2.93 x 10^5 j