A75 um thick polysulphone microporous membrane has an average porosity of e 0.35. pure water flux through the membrane is 35 m'/m h at a pressure drop of 2 bar at 25°c. the average pore size is estimated to be 0.8 um. calculate the tortuosity factor of the pores, the resistance to flow offered by the membrane and its water permeability. the viscosity of water at 25°c is 0.9 cp

Jewelweed, a flowering plant, has seed pods that burst open when touched and forcefully eject their seeds. these structures are favorable because they a. can cause genetic changes to occur. b. prevent germination within the seed pod. c. aid in the dispersal of the species. d. attract insects that aid in pollination.

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

Consider the equilibrium system: 2icl(s) ⇄ i2(s) + cl2(g) which of the following changes will increase the total amount of of cl2 that can be produced? all of the listed answers are correct decreasing the volume of the container removing the cl2 as it is formed adding more icl(s) removing some of the i2(s)