an artifact has a starting mass of C-14 of 200 g and a remaining mass of 0.78125 g. how old if the artifact?

[4.58^4 years]

2 answers

.78125=200e^(ln2*t/thalf)

take the ln of both sides.

ln(.78125)=ln200+ln2*t/thalf
HALF-LIFE 3 CONFIRMED