Examine the information.
Element A has a half-life of 10 days. A scientist measures out 200 g of this substance. After 30 days has passed, the scientist reexamines the sample. 
How much Element A will remain in the sample

100g

12.5g

50g

25g

is it d?

Answers

Answered by DrBob222
YES
Answered by check answer please
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