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tia_tia [17]
3 years ago
10

Nickel-63 has half-life of about 96 years. after 336 years,about how many milligrams of an 800 mg sample will remain?

Mathematics
2 answers:
vagabundo [1.1K]3 years ago
5 0
F=ar^t if the half-life is 96 years...

.5=r^96

ln(.5)=96lnr

ln(.5)/96=lnr

r=e^((ln.5)/96)

f=800e^(336(ln.5)/96)

f=70.71

So about 71mg will remain after 336 years.


LUCKY_DIMON [66]3 years ago
3 0

Answer:

71 mg

Step-by-step explanation:

nickel-63 has half-life of about 96 years. after 336 years

Initial value is  800 mg sample

half life of nickel-63 is 96 years

time given is 336 years

we use half life formula to get the71 mg amount of nickel remains

Final value = initial value (1/2)^(Time /t(half life ))

final \ value = 800(\frac{1}{2})^{\frac{336}{96}}

now simplify it

336/ 96 = 7/2

final \ value = 800(\frac{1}{2})^{\frac{7}{2}}

= 70.7106

so answer is

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