@ Part 1: Carbon dating An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of 430 g (HINT: Assume all the carbon is 12 and determine the number of atoms, 12C has a molar mass of 12 g/mol) and careful measurements show that the remaining 14C has a current decay rate of 17 decays/s. Determine the age of the bone (and presumably the jewelry). The ratio of 14C to 12C when the animal died was 1.25x107'2 & the half-life of 14 is 5730 y. Additionally, 1 mol = 6.022x10% particles, 1y = 365.25 days, & 1 day = 24 h. age of bone =| 316,000 y x [ Part 2: Rubidium-Strontium dating A geologist finds an old rock and wants to determine its age using rubidium-strontium dating. This is possible because "TRb, which has a half-life of 4.75x1010 y, undergoes 8 ~ decay and becomes 873r. The geologist determines that the ratio of 87Sr to 8'Rb is 0.308. Assuming there was no 878r in the rock when it was formed, determine the age of the rock