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The half life of Radon-222 is 3.8 days. If you have a 90.0g sample of Radon-222 in the lab, how much will be left after 19 days?
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The half life of Radon-222 is 3.8 days. If you have a 90.0g sample of Radon-222 in the lab, how much will be left after 19 days?

User Ehssan
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1 Answer

3 votes

Answer:

half lives passed=5

given sample=90g

sample left=2.8125g

Step-by-step explanation:

no. of half lives=total time/half life

no.=19days/3.8days

no.=5 days

after 5 half lives sample left=2.8125g

User BruceyBandit
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