Steph_Hammond
Jul16-11, 11:14 AM
Can anyone please tell me how to set this up? I'm having a lot of trouble for some reason:confused: I'm new to this whole forum thing so forgive me if I'm doing this all wrong:shy:
The half-life for the radioactive decay of calcium-47 is 4.5 . If a sample has an activity of 4.0 after 9.0 , what was the initial activity of the sample?
Rounded to 2 significant figs.
Thanks a ton!:smile:
The half-life for the radioactive decay of calcium-47 is 4.5 . If a sample has an activity of 4.0 after 9.0 , what was the initial activity of the sample?
Rounded to 2 significant figs.
Thanks a ton!:smile: