Strontium-90 is one of the products of the fission of uranium-235. This strontium isotope is radioactive, with a half-life of 28. Calculate how long...

Strontium-90 is one of the products of the fission of uranium-235. This strontium isotope is radioactive, with a half-life of 28.1 yr. Calculate how long it will take for 0.800 g of the isotope to be reduced to 0.370 g by decay.