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How many C-13 atoms are present on average in a 13000-atom sample of carbon?
Wiki User
∙ 6y ago
Carbon-13 make up 1.1% of carbon atoms. .011 x 19000 carbon atoms = 209 carbon-13 atoms present.
Wiki User
∙ 10y ago
Wiki User
∙ 7y agoThe average natural abundance of C-13 is listed as 1.109%. Thus, in a 20000-atom sample of carbon there would be (20000)(0.001109) = 22 atoms of C-13
Wiki User
∙ 6y agoThe number of carbon-13 atoms is 130.
Wiki User
∙ 8y agoApprox. 175 C-13 atoms.
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17,100 years old
The carbon-14 in a wooden sample shows a ratio of 0.0093 between the carbon-14 in the wood and present-day samples The half-life of carbon-14 is 5730 years How old is the wood?
38, 700 years old
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in every sample of carbon monoxide ,the mass ratio of carbon to oxygen is 3:4
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.06798mg
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A sample average can be used to estimate a population average precision if the sample is?
large
