How many times more massive is a copper atom than an aluminum atom?

2.355 times

        = 26.98 g : 63.55 g

         = 1 : 2.355

i'm assuming that it's c.) red bank..

> 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.