a-256g-sample-of-a-radioisotope-has-a-half-life-of-2-years-calculate-the-remaini

Question

A 256g sample of a radioisotope has a half-life of 2 years. Calculate the remaining mass after each half-life for 8 years.

Accepted Answer

128g after 2 years, 64g after 4 years, 32g after 6 years, 16g after 8 years

Answer

192g after 2 years, 96g after 4 years, 48g after 6 years, 24g after 8 years

Answer

256g after 2 years, 128g after 4 years, 64g after 6 years, 32g after 8 years

Answer

64g after 2 years, 32g after 4 years, 16g after 6 years, 8g after 8 years