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2 votes
The half-life of a radioactive kind of

cesium is 30 years. How much will be
left after 60 years, if you start with
1,800 grams of it?

User Lystra
by
3.2k points

2 Answers

4 votes

Answer:

450 gm...this is because we start with 1800/2 = 900 = 30 and 900/2 =450 = 60 yrs. = 450 gm

Explanation:

User Colbadhombre
by
3.9k points
4 votes

Answer:

Every 30 years you'll have half left

After 30 years = 900 grams

after 60 years 450 grams

Explanation:

User Gchtr
by
3.6k points