mcouil5746 mcouil5746 08-12-2022 Chemistry Answered Strontium-90 is one of the products of the fission of uranium-235. This strontium isotope is radioactive with half-life of 28. 1 years. Calculate how long (in years) it will take for 2. 15 g of the isotope to reduced to 0. 96 g by decay.