J. G. PRITCHARD AND F. A. LONG
GOO8
in which this semi-convergent series is satisfactory for the values of z as encountered here. I n practice ~1 = E*/RT4, 22 = E*/R(Td 100). 2. Isothermal Build-up of Bromine Atoms.Using the mechanism in Table I, assuming that [Hz] and [Brz] are constant, [HBr]