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horrorfan [7]
3 years ago
9

Radon is a naturally occurring radioactive gas. It is on of the products produce as uranium decays. Radon has a half-life of app

roximately 4 days. If you have a sample of radon with a mass of 4 grams, how many grams will be left at the end of 8 days?
(A) 4

(B) 2

(C) 1

(D) none of these
Chemistry
2 answers:
MakcuM [25]3 years ago
8 0

d of course it would be none


n200080 [17]3 years ago
3 0

Every 4 days, the amount of radon you started with is reduced by half.

Start with 4 grams of radon on day 1

After 4 days, you have (1/2)* 4 grams of radon = 2 grams

Start with 2 grams of radon on day 5

After four more days (end of day 8) you have:

(1/2)*2 grams = ?

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