Consider steady one-dimensional mass diffusion through a wall. Mark these statements as being True or False.
_____(a) Other things being equal, the higher the density of the wall, the higher the rate of mass transfer.
_____(b) Other things being equal, doubling the thickness of the wall will double the rate of mass transfer.
_____(c) Other things being equal, the higher the temperature, the higher the rate of mass transfer.
_____(d) Other things being equal, doubling the mass fraction of the diffusing species at the high concentration side will double the rate of mass transfer.