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Andrei [34K]
3 years ago
5

Nitrogen and hydrogen react to produce ammonia.

Chemistry
1 answer:
Doss [256]3 years ago
6 0

Answer:

yep yep yep yep yep yep yep yep yep yep so cool yep

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Explanation:

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Archeologists can determine the age of artifacts made of wood or bone by measuring the amount of the radioactive isotope 14C pre
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Answer: The age of the tool is 15539 years

Explanation:

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

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

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t = age of sample

a = let initial amount of the reactant = 100

a - x = amount left after decay process = \frac{15.5}{100}\times 100=15.5  

a) for completion of half life:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.  

t_{\frac{1}{2}}=\frac{0.693}{k}

k=\frac{0.693}{5730yr}=0.00012yr^{-1}

b) for 15.5 % of original amount

t=\frac{2.303}{0.00012}\log\frac{100}{15.5}

t=15539years

Thus age of the tool is 15539 years

8 0
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Can someone help me understand how to solve mole problems in chemistry?
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2. What if hydrogen were left over?
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