what is the average atomic mass of carbon 14（関連順）

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A sample of carbon that contains 70% C- 12 and 30% C- 14. What do you think the average atomic mass?

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炭素には次の 3 つの同位体があり、相対的な存在比と質量 (amu) が表に示されています。

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結果 : what is the average atomic mass of carbon 14