Question

22. Before the year 1900 the activity per unit
mass of atmospheric carbon due to the
presence of "C averaged about 0.255 By
per gram of carbon. (a) What fraction
of carbon atoms were HC? (b) An
archaeological specimen containing 500
mg of carbon, shows 174 decays in one
hour. What is the age of the specimen,
assuming that its activity per unit mass
of carbon when the specimen died was
equal to the average value of the air?
Half-life of "C is 5730 years?
[Ans: Four atoms in every 3x102
carbon atoms were '*C, 8020 years)​

Answer 1

Explanation:

Ans: Four atoms in every 3x102

Ans: Four atoms in every 3x102carbon atoms were '*C, 8020 years.