# Question: How do you calculate carbon dating?

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We can use our our general model for exponential decay to calculate the amount of carbon at any given time using the equation, N (t) = N0e kt . Modeling the decay of 14C. Other radioactive isotopes are also used to date fossils.

## How do you calculate carbon-14?

m(t)=100e−0.000121t. With this formula, we can calculate the amount m of carbon-14 over the years. Every year, the mass m of carbon-14 is multiplied by e−0.000121≈0.999879. After 100 years, 98.7973 nanograms still remain.

## How do you calculate half life for carbon dating?

0:111:23Calculating half life using carbon-14 - YouTubeYouTubeStart of suggested clipEnd of suggested clipInto nitrogen-14. And that takes 5,700 years 50% of the isotope is left in the next half life halfMoreInto nitrogen-14. And that takes 5,700 years 50% of the isotope is left in the next half life half of that isotope will decay. That takes 11,400 years and 25% of the original. Isotope.

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

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

## What percentage of carbon-14 remains after 1 half-life?

1. 5,730 years; The graph shows that 50 percent of the carbon-14 atoms have decayed after 5,730 years, so 5,730 is the half-life of carbon-14.