Please help me with this calculation. I read that chaper in my book three times now and still don't know what actually do to(adsbygoogle = window.adsbygoogle || []).push({});

calculate the atomic Rb-87/Sr-86 ratio of a rock sample containing Rb=125 microg/g and Sr=275 microg/g.

Atomic weights: Rb=85.46, Sr=87.62

isotopic abundancy: Rb-87=27.83%, Sr-86=9.90%

I found the following formula:

Sr-87/Sr-86 = (Sr-87/Sr-86) small 0 + Rb-87/Sr-86 (e^labda*t -1)

Well, what do I do with this formular and how do I put all the given data into it?

Thousand thanks!

Martine

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Dating methods: calculating atomic ratio?

Loading...

Similar Threads for Dating methods calculating |
---|

Does Beer-Lambert's law calculate the absorbance of a solute |

Methods for quantifying colloids? |

Mass Spectra -- determining the method of ionization |

**Physics Forums | Science Articles, Homework Help, Discussion**