A radioactive sample contains 2.45g of an isotope wiht a half life of 3.8 days. How much of the isotope in grams remains after 11.4 days?

Question

please explain

Answer 1

k = 0.693/t_1/2
Solve for t_1/2 and substitute into the equation below.
ln(No/N) = kt
No = starting grams = 2.45 g
N = ending amount. Solve for this.
k = from above calculation.
t = 11.5 days.

Answer 2

0.30625

Answer 3

100g of radioactive mass has a half life of 5days.calculate the mass decayed off aafter 15days

Answer 4

100g of radioactive mass has a half life of 5days.calculate the mass decayed off aaftGood day sir, My Name is Oyindamola from Enterprise ware Technologies(Mr Seun Aina-Scott’s Company)
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