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OpenStudy (anonymous):
A 10 gram sample of a substance that's used to detect explosives has a k-value of 0.1353. Find the subtance's half-life, in days.round to the nearest hundreds
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OpenStudy (anonymous):
@Jack1
OpenStudy (jack1):
u can use the same equation from last time, just now its N = No e ^-kt so for 1/2 life N = No e ^-kt 5 = 10 e ^(-0.1353t)
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