Suppose a solid metal catalyst has a surface area of 1000 cm2. (a) If the distance between atomic centers is 145 pm and the structure of the metal is simple cubic, how many metal atoms are exposed on the surface? (b) Assuming that the number of active sites on the metal has an equilibrium concentration of adsorbed gas, A, and that the rate of the reaction A B is 1.00*10^6 mole/sec, what fraction of the metal atoms on the surface