bigoussama3 bigoussama3

27-12-2022
Chemistry

Answered

C=3×10(8)m/s, 1eV=1.6×10(-19)J , RH=1.079×10(7)m-1, 1nm=10(-9)m, 1A°=10(- 10)m, h=6.63×10(-34)J.s
The radioactivity A of a drop of iodine I-131 if the mass of the drop is 1.5 g and the period is 13h is:

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