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change your an button again for your 2nd attempt. The half-life of Radium-226 is 1590 years. If a sample contains 500 mg, how many mg

change your an button again for your 2nd attempt. The half-life of Radium-226 is 1590 years. If a sample contains 500 mg, how many mg will remain after 3000 years? mg Give your answer accurate to at least 2 decimal places. Submit

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