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Firlakuza [10]
3 years ago
14

If you have 100 grams of a radioactive isotope with a half life of 10 years how much of the isotope will you have left after 10

years
Chemistry
1 answer:
Harman [31]3 years ago
5 0

Answer:

50.0 g.

Explanation:

  • It is known that the decay of a radioactive isotope isotope obeys first order kinetics.
  • Also, it is clear that in first order decay the half-life time is independent of the initial concentration.
  • Half-life time is the time needed for the reactants to be in its half concentration.
  • If reactant has initial concentration [A₀], after half-life time its concentration will be ([A₀]/2).

  • So, the mentioned radioactive isotope after 10 years will have (100/2 = 50.0 g).

<em>Thus, the amount of radioactive isotope is 50.0 g.</em>

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