vicki54201 vicki54201

15-12-2022
Chemistry

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a 150- mgmg sample of technetium-99 mm is used for a diagnostic test. if technetium-99 mm has a half-life of 6.0 hh , how many milligrams of the technetium-99 mm sample remains active 18 hh after the test? express your answer to two significant figures and include the appropriate units.

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