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weeeeeb [17]
3 years ago
11

PLEASE HELPPPPPPPPP MEEEEEEEEEEE!!!!!

Chemistry
2 answers:
vazorg [7]3 years ago
6 0

Due to the fact that we must find the weight in 300 years, we must find the weight of the element in 3 half-lives. In order to do this, we must divide the original number, 1 kilo, by 1/8 to find the quantity left. 1 kilo = 1000 grams, 1000 g / 1/8 = 125g. This means that the answer should be D.

I hope I've helped! :)

Andrew [12]3 years ago
3 0

Option (d) would be correct

To find the weight of the radioactive element in 300 years, we find its weight in 3 half-lives

Now all you got to do is divide the given weight by 8, it's that easy!

But remember to take the weight in GRAMS

Therefore, you will have 1000/8 = 125 g

(We took 1000 because 1 kg = 1000 g)

And yeah, you can mark H1storyBuff as the 'Brainliest' :)

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