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cupoosta [38]
3 years ago
11

Please help ASAP!!!!

Biology
1 answer:
Juli2301 [7.4K]3 years ago
3 0

Answer:

i think the answer is c

Explanation:

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Explanation:

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First we have to calculate the rate constant, we use the formula :

k=\frac{0.693}{5700\text{years}}

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Now we have to calculate the age of the sample:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = 1.21\times 10^{-4}\text{years}^{-1}
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a = let initial amount of the reactant  = 100 g
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a - x = amount left after decay process  = 100 - 75 = 25 g  Now put all the given values in above equation, we get
[tex]t==\frac{2.303}{1.21\times 10^{-4}}\log\frac{100}{25}

t=11459years

The fossil is 11459 years old.

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Is The Rock Of Gibraltar metamorphic, igneous, or sedimentary
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