An ionic compound is made up of... A. Atomswhose sizes are so different that the atoms
form ions
B. atoms whose electronegativities are so different that
the atoms form ions
C. atoms that share electrons
D. two nonmetals

> 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.

alchemy hadn't scientific methods of study, appeal to mysticism and fantasy, the knowledge of chemistry and physics were modest at that time.

alchemy was - but as new rules were discovered it either changed into chemistry or it became "unscientific".