Amixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. the cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of . the cylinder is also submerged in a large insulated water bath. (see sketch at right.) from previous experiments, this chemical reaction is known to release of energy. the temperature of the water bath is monitored, and it is determined from this data that of heat flows out of the system during the reaction.

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

the atomic mass is the bottom number on the element.

-steel jelly

> 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.

the answer is 0.8m.

by: nicholas