The warm air from this heater creates a current
when the warm air rises and the cold air sinks.

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it

thats how its supposed to be

> 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.