The half-life for the radioactive decay of U – 238 is 4.5 billion years and is independent of initial concentration. Part A How long will it take for 17 % of the U - 238 atoms in a sample of U - 238 to decay? Express your answer using two significant figures. t = 9.0 • 108 yr Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining

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