Geography, 28.09.2019 05:30 tashanicole
In the last question, i measured 1000 atoms of u-235 (parent) and 3000 atoms of pb-207 (daughter) in a mineral. if the half life of u-235 is 700 million years, then how old is the mineral? if the mineral came from an igneous rock, then how old is the rock?
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In the last question, i measured 1000 atoms of u-235 (parent) and 3000 atoms of pb-207 (daughter) in...
History, 24.10.2019 21:43