Question: What mass of solid CaO is needed to remove the sulfur dioxide from 1.0 *10^6 m^3 of air having an SO2 concentration of 1.5*10^-9 M ? Assume that the reaction leading to removal of the sulfur dioxide is:
CaO(s)+SO2(g) -> CaCO3(s)
a) 56g
b) 96g
c) 37g
d) 84g
e) 43g