A radioactive element decays according to the tuncton Q = 0, "where mo is the amount of the substance at time t=0 r is the continuous compound rate of decay, t is the time in years, and Q is the amount of the substance at time it the continuous compound rate of the element per year is t= -0 000212, how long will it take a certain amount of this element to decay to half the orginal amount? (The period is the half-life of the substance) CD the hallsde of the Clement is approximately years (Do not found until the final answer then round to the nearest year as needed)