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Determine the Half-life of a 100 g sample of isotope I-54 that decomposed to 25 g over an 8 day period?
I couldn't figure this out on my chemistry homework, could you help me? I'll pick best answer.
Determine the Half-life of a 100 g sample of isotope I-54 that decomposed to 25 g over an 8 day period
2 Answers
- Roger the MoleLv 78 years agoFavorite Answer
100 g to 50 g is one half-life.
50g to 25g is another half-life.
So there are 2 half-lives in 8 days, or 1 half-life every 4 days.
- 4 years ago
If i'm no longer incorrect, it may take 16 years for this isotope to chop back to a million/4 its unique mass. interior the first 8 years, the substance will decrease to 50g, and interior the 2d 8 years, the isotope will decrease to 25g. i am hoping this facilitates.
