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Cobalt 60 has a half-life of about 5 years. How many grams of 300 g sample will remain after 20 years? 1. 0.0625 g 2. 9.375 g 3. 18.75 g 4. 37.5 g
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Cobalt 60 has a half-life of about 5 years.

How many grams of 300 g sample will remain after 20 years?

1. 0.0625 g
2. 9.375 g
3. 18.75 g
4. 37.5 g

User ZeusSelerim
by
8.0k points

2 Answers

2 votes

Answer:

3. 18.75

Explanation:

took the test and got it correct

User Tleb
by
8.3k points
5 votes
after 5 years ...150g
after 10 years..75 g
after 15 years...37,5
after 20 years...18,75 g
User Dettorer
by
8.4k points
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