write and solve an algebraic equation to find the original mass of a sample of the radioactive isotope uranium-235 which has half life of 704 million years your sample is about 700 million years old and weighs 120 grams
write and solve an algebraic equation to find the original mass of a sample of the radioactive isotope uranium-235 which has half life of 704 million years your sample is about 700 million years old and weighs 120 grams