A(n) your legal document issued by a government that gives an inventor exclusive rights to make use or sell intervention for a limited time

i think so it’s will be b yes i believe its

> 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.