Respuesta :

maacastrobr

Answer:

800 g

Explanation:

We can express the decay of I-37 using the formula:

  • Final Mass = Initial Mass * [tex]0.5^{\frac{Time}{Half-Life} }[/tex]

We input the data:

  • 25 g = Initial Mass * [tex]0.5^{(\frac{40.35}{8.07})}[/tex]

And solve for Initial Mass:

  • 25 g = Initial Mass * [tex]0.5^{5}[/tex]
  • 25 g = Initial Mass * 0.03125
  • Initial Mass = 800 g

Meaning that out 800 grams of I-37, only 25 will remain after 40.35 days.