A 18 g tortilla is burnt, it raises the temperature of a can of water with 2300 ml of water in it from 30 to 75 degrees Celsius. After it is burned the tortilla weighs only 9 g.

> 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.