Explain moon rock was examined by mass spectroscopy

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A sample of moon rock was examined by mass spectroscopy. Merely 11.47% of the original 4019k remained the rest had decayed to 4018Ar. the initial amount, No (Nknot) would be 100%. Half-life of potassium-40, t1/2 = 1.28 * 109 years. Answer for the rate constant K.

Reference no: EM13658933

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