Sodium-24 has a half-life of approximately 15 hours. If only one-eighth of the sodium-24 remains, about how much time has passed?
a
30 hours
b
15 hours
c
45 hours
d
60 hours
1 answer
c) 45 hours
a
30 hours
b
15 hours
c
45 hours
d
60 hours
1 answer
1 answer
4 answers
8 answers
2 answers