Overview
Q10) The rubidium isotope 8737Rb, a beta emitter with a half-life of 4.75x1010 years, is used to determine the age of rocks and fossils. Rocks containing fossils of early animals contain a ratio of 87 38 Sr to 8737Rb of 0.0160. Assuming that there was no 87 38 Sr present when the rocks were formed, calculate the age of these fossils.