Question: What percentage of carbon-14 remains after 2 half lives?

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After two half-lives, 25 percent of the original carbon-14 atoms remain.

How many grams of carbon-14 will there be after another half-life?

After another 5730 years ( two half lives or 11460 years) 35 /2 = 17.5mg decays and 17.5 g remains left . After another 5730 years ( three half lives or 17190 years) 17.5 /2 = 8.75mg decays and 8.75g remains left. after three half lives or 17190 years, 8.75 g of C-14 will be left.

What is the ½ life of carbon-14?

5,730 ± 40 years Carbon-14 has a half-life of 5,730 ± 40 years—i.e., half the amount of the radioisotope present at any given time will undergo spontaneous disintegration during the succeeding 5,730 years.

What percentage of nitrogen-14 has formed after 2 half lives?

Isotopes of nitrogenIsotopeabundancehalf-life (t1/2)13Nsyn9.965 min14N99.6%stable15N0.4%stable

Is nitrogen-14 an isotope?

The stable isotope of nitrogen with relative atomic mass 14.003074. The most abundant (99.63 atom percent) isotope of naturally occurring nitrogen.

What is the difference between nitrogen-14 and 15?

Explanation: Well, 14N and 15N are two isotopes of nitrogen, meaning that they have the same amount of protons but different amount of neutrons. They will have different amount of neutrons, there are 7 neutrons in 14N and 8 neutrons in 15N .

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