Calculate the following: a. What is the decay constant for Pollonium-212 if the half-life is 299x10 9 s? b. What is the half-life of Carbon-11 if the decay constant is 5.68x10 4/s? 2.4 m/s^2 s; 2320 s 2.32 x 10-6 s; 1450 s 2.32 x 10^-6 5; 1220 s 1.22 x 10^-3 s; 2320 s