Asked by victoria
sodium-24 has a half-life of 15 hours how much of a 20 gram sample would remain after 30 hours? and how do you solve this?
Answers
Answered by
R_scott
30 hr is two half-lives ... 30 / 15 = 2
each half-life reduces the amount by half
20 g * 1/2 * 1/2 = ?
each half-life reduces the amount by half
20 g * 1/2 * 1/2 = ?
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