The half-life of carbon-14 is 5,730 years. after 11,460 years, how much of the original carbon-14 remains?

After 1 half-life, 12 of the C-14 would remain. After 2 half-life, 12 of the 12 of the C-14 = 14 of the C-14 would remain. After 3 half-life, 12 of the 14 of the C-14 = 18 of the C-14 would remain. ...After n half-lives, 12n of the C-14 would remain. Was this helpful? Let the contributor know! Yes. Post comment 1500

Gallium melts near room temperature and has one of the largest  liquid  ranges of any metal, so it has found use in high temperature thermometers.