A sample of (atomic mass

PHYSICS · Subjective · A Level · Physics · Nuclear physics · Nuclear physics

Problem

A 0.50 g0.50\,\text{g} sample of 131I^{131}\text{I} (atomic mass 131 u131\,\text{u}, half-life 8.0 days8.0\,\text{days}) is freshly prepared. Calculate its initial activity in Bq. \;(Avogadro constant NA=6.022×1023 mol−1N_A = 6.022\times10^{23}\,\text{mol}^{-1}.)

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