Estimate the pore diffusivity, the membrane diffusivity, and the effective diffusivity of a spherically shaped molecule with a molecular weight equal to 35,000 through a membrane containing straight cylindrical pores that are 8 nm in diameter. Assume that the molecule enters the pores of the membrane from a well-stirred bulk solution and that the porosity of the membrane is 0.40.

looks like youre on your own with this one buddy

hello there,

igneous rock formed from below the surface would have more crystals because

answer: because magma cools more slowly than lava

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).