Answer:
56
Step-by-step explanation:
A 33 gram sample has k value of .1124
(Actually I think the problem SHOULD be worded: A 33 gram sample has k value of -.1124/days)
See attached graphic:
Half-Life = ln (.5) / k
Half-Life = -.693147 / -.1124/days
Half-Life =
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<span>
<span>
6.1667882562
</span>
</span>
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days
Source:
http://www.1728.org/halflif2.htm
5*3=15
15-4= 11
hope I helped:)