Ash remains from an ancient fire pit was discovered to have only 12.5% of the original Carbon-14 it once contained. If the half-life of Carbon-14 is 5,730 years,

how long ago was this pit used? Show or describe how you solved this. *



in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm

tracks, burrows, eggshells, nests, tooth marks, or gastroliths

catya that's not even a b or c