73. What is the rate constant for radioactive decay of 14CO2(g) at 0.1 atm? (The half-life of C-14 nucleus is 5730 years.)
(A) 1.38 × 10‒8h‒1
(B) 2.76 × 10‒8h‒1
(C) 1.38 × 10‒9h‒1
(D) 3.45 × 10‒9h‒1
(E) 6.90 × 10‒9h‒1