Question

Determine the mass of na 22 which has a activity 5 mic

Answer 1

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Answer 2

Step by Step explanation;

The half life of Na^22 is =2.6years

Avogadro's Constant=6.023*10^23

The rate of decay, R , =5mic=5*3.7*10^7dps

The haf life of sodium, T, is 2.6years, changing to seconds,

T=2.6*12*365*8.64*10^4 sec

The number of atoms in Sodium, N=RT/Avogadro's constant

N=5*12*365*3.7*10^7*2.6*8.64*10^4/0.6023=81680491449443800

Therefore,the mass of Na^22=81680491449443800