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A student is trying to determine the half-life of the radioactive isotope Idoine-131. She’s measuring the amount of iodine in a sample every 8 hours. The data obtained is shown on this table: Time (in
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21 votes
21 votes
A student is trying to determine the half-life of the radioactive isotope Idoine-131. She’s measuring the amount of iodine in a sample every 8 hours.

The data obtained is shown on this table:
Time (in hours) Iodine-131 (in grams)
0 =4.80
8 =4.66
16 =4.51
24 =4.39
32 =4.29
40 =4.14
48 4.04

User Philippe Sillon
by
2.5k points

1 Answer

26 votes
26 votes

Answer:

y=79246*0.99642^t

Explanation:

t=hours, y=amount of grams.

User Xpioneer
by
2.3k points
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