Question

h) Radiocarbon testing: 1C occurs naturally from neutron bombardment of 14N due to cosmic radiation. 1C is unstable and decays by beta emission, with a half-life of 5730 yr. Bombardment or transmutation reactions are listed in shorthand as "original nucleus (particle in, particle out) new nucleus." Complete the two nuclear reactions involved: 14,C 14,N ( C 14,N+on + or 146C Background: The ratio of 1"C to 12C has been relatively constant on earth (about 1 atom in a trillion atoms of carbon is 1C), since the rate of formation is about the same as the rate of decay. Living matter incorporates this C in approximately the same ratio. Living matter has a decay rate ( activity) due to 1C of 15.3 disintegrations/min g of C. When the plant or animal dies (time zero), it no longer takes in new 1"C, but the carbon-14 present continues to decay. The activity, which decreases over time, is directly proportional to the amount of "C since the rate of decay follows 1st order kinetics, and thus the activity can be used in place of the [C] in the integrated rate law.

Answer 1

14 final inithal ma mass 1 finad proton initial proton particle is un lenown Pro ton now beta emission oC 14 decay as in be ta mass remaih the same hut atomic n umber &nereane .(ra