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Cesium-137 undergoes beta decay and has a half-life of 30.0 years. How many beta particles are emitted by a 14,0-g sample of cesium-137 in three minutes? 6.1 x 10*13 6.2 x 10*22 8.4 x 10*15 1.3 x 10*-8 8,1 x 10*15