A 269 mg sample of rock was found to have 245 times 10-6


A 269 mg sample of rock was found to have 2.45 × 10-6 mol of potassium-40 (t1/2 = 1.3 × 109 yr) and 2.45 × 10-6 mol of argon-40. How old was the rock? (Hint: What assumption is made about the origin of the argon-40?). Enter your answer in scientific notation:

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Chemistry: A 269 mg sample of rock was found to have 245 times 10-6
Reference No:- TGS0588040

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