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10-09-2021
Mathematics

contestada

LQQ#2 Sodium-24 has a half-life of 15 hours. How
many grams of a 450 g sample will remain after 45
hours?

Respuesta :

LammettHash LammettHash

10-09-2021

Notice that 45 hours is 3 times the half-life of 15 hours.

After the first 15 hours, 450 g decays to half this amount, 225 g.

After the next 15 (total 30), 225 g decays to 112.5 g.

After the next 15 (total 45), 112.5 g decays to 56.25 g.

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