The half-life of a radioactive isotope is 20 minutes. What is the total amount of 1.00 g of sample of this isotope remaining aft

Question

Leona [35]

3 years ago

6

The half-life of a radioactive isotope is 20 minutes. What is the total amount of 1.00 g of sample of this isotope remaining aft

er 1 hour?

Chemistry

1 answer:

Nikolay [14] · Answer 1 · 2022-06-02T06:04:48+03:00

Nikolay [14]3 years ago

6 0

So since every 20 mins the mass will be cut in half (and that happens 3 times), you have just got to divide 1g by 2, 3 times.

after 20 mins the mass will be .5

after 40 mins the mass will be .25

Answer: After 1 hour the mass will be .125g