A2,000g of c-14 is left to decay radioactively. the half-life of carbon-14 is approximately 5,700 years. what fraction of the sample will remain after 17,100 years? a) 1/2 b) 1/4 c) 1/8 d) 1/16

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation: