50. Determine the number of atoms in each sample. a. 45.0 g Si
b. 45.0 g Sn
c. 28.2 mg Pb
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> 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.