A freshly separated sample of carbon-14 has a mass of 12 g
CHEMISTRY · Subjective · US High School · Chemistry · Atomic Structure & Nuclear · Atomic Structure & Nuclear
Problem
A freshly separated sample of carbon-14 has a mass of 12 g.
(i) Calculate the mass that remains undecayed after 11 460 years.
(ii) The sample is then left for a further 2 000 years. Find the mass still present at the end of this second interval.
(iii) Express the final mass obtained in part (ii) as a percentage of the original 12 g.
[Given: the half-life of carbon-14 is 5 730 years.]