Question

A) First consider C14 nuclear, why this nuclear is not stable? what types of decay it will likely go? Write a nuclear chemical equation for that.

B) The half-lifetime for C14 is 5732 years. In C-14 dating, what assumptions do scientists assume in C-14 dating? Discuss how good are the assumptions.

C) An ancient skull has carbon-14 decay rate of 0.86 disintegration per minute per gram of C (0.86 dis/min gC). The present day Carbon-14 decay is 15.3 dis/min gC. How old is the skull? Show your steps.

**Typed responses please because it's hard to understand some of the hand written responses that I have received in the past

Answer 1

All carbon in the world's living cycle is kept uniformly radioactive through ¹⁴​​​​​14C.This originates in the atmosphere through bombardment of nitrogen by newtrons from cosmic raya.

¹⁴₇N + ⁰₁n= ¹₁H + ¹⁴₆C --------->> ¹⁴₇N + $\beta$ + $\vartheta$

​​​
stcons LH nuean h.mica An anefenH skil has eaoben -lu sa Co.gdswnernH Clbseto teni 2.경 as to meut Cn a proton dee Ine 72 14 6

died and assimilat, o adaache、 Carben eased o etinue smaila, v형 100 aetivily of sample rblem a skull) hos

esen er qm e- 2.30 5 180 O.G 15, 9 o B6 2380 6 Jears