conyers234
19.02.2020 •
Chemistry
You are dating rocks by their proportion of parent isotope potassium-40 (half-life time 1.25 billion years) and daughter isotope argon-40. If the rock initially was made of only potassium-40, find the age for each of the following (explain your reasoning): a) A rock containing equal amount of potassium-40 and Argon-40. b) A rock that contain three times as much argon-40 as potassium-40
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Ответ:
8.70 liters
Explanation: