Homework Answers
Initial mass = 293.8
Half life = 19 minutes
So we can write
y = 293.8 e^(kt )
Plugging y = 293.8/2 and t = 19
293.8 / 2 = 293.8 e^( 19k)
1/2 = e^( 19k)
k = ln (1/2)/19
 |
b)
Plugging t = 18
y = 293.8 e^(ln 0.5) / 19 * 18
| 152.4 mg |
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