given the conditions of problem 17.9, except that the outside temperature of the masonry brick cannot exceed 325K, by how much must the thickness of kaolin be adjusted to satisfy this requirement

sry but any answer choices

i think   the answer is c hope i'm right

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.