Please help me answer all of them correctly. Please help me answer all of them. I would appreciate it, this is my last c

[answerhappygod]

Please help me answer all of them correctly. Please help me
answer all of them. I would appreciate it, this is my last chance,
please. Check it, carefully, please.
1.a.

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1.b.

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Please answer yes or no

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13N is a radioactive nuclide of the element nitrogen with a half-life of 10.0 minutes. What percentage of a stored sample of this isotope would be lost due to radioactive decay in a 336 second period? 1%

A fragment of cloth found just outside Jerusalem is believed to have been used by some person at about the beginning of the Christian era. Analysis shows that radiation from the fragment is 18.7 units, whereas radiation from a living specimen is 33.8 units when measured with the same instrument. Is it possible that the fragment might have come from the period believed? Justify your answer by estimating the age of the cloth fragment. The half-life of carbon-14 is 5.73x103 years. Is it possible? years

yes no