consider a reaction catalysed by an enzyme immobilized within porous particles with diameters d$1=5$mm and d$=10$mm$.$ mass transfer limitations are insignificant in the $5$mm diameter particles while mass transfer limitations exist in $10$ mm diameter particles. the substrate conversion rate in $5$mm diameter particles is $1\mathrm{.}58*10^-3$ mmol$/$cm$^3$s$.$ estimate the fraction of substrate conversion rate with a $10$mm diameter