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###### How many milligrams of a 16 mg sample of cesium-137 remain after 90 years Express the mass to two significant figures and include the appropriate unlts_ValueUnitsSubmitRequest AnswerPart CHow many years are required for 40 Ing of cesium-137 t0 decay to 2.5 Ing of cesium-137? Express the time in years to two significant figures_AzdyoarsSubmitRequest Answer

How many milligrams of a 16 mg sample of cesium-137 remain after 90 years Express the mass to two significant figures and include the appropriate unlts_ Value Units Submit Request Answer Part C How many years are required for 40 Ing of cesium-137 t0 decay to 2.5 Ing of cesium-137? Express the time in years to two significant figures_ Azd yoars Submit Request Answer

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