If a 100 gram sample of radon has decayed to 12.5 grams how many half-lives have passed? No spams please! If you spam link your not funny or cool. So please answer without links!☺️

T(s) in2os] (m) 0 185 2.39 546 1.90 725 1.70 the decomposition of n205 can be described by the equation 2.68 given these data for the reaction at 45°c in carbon tetrachloride solution, calculate the average rate of reaction for each successive time interval. ntr s to 185 s 185 s to 546 s 546 s to 725 s number number number reaction rate: m/s m/s m/s