Explain cesium-137 has a half-life of 30 years

Reference no: EM13266513

Cesium-137 has a half-life of 30 years. You begin with a 20.0 g sample of Cs-137. How many half-lives occur if you wait a total of 60 years? (do not include units in this box; enter your answer to 1 sig fig) How many grams of Cs-137 would remain after waiting 60 years?

Reference no: EM13266513

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