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sdas [7]
3 years ago
14

The half life of a radioactive element is 2 million years. a mass of rock originally contained 200g of this element. how many gr

ams of the element are left after 4 million years?
Chemistry
1 answer:
julia-pushkina [17]3 years ago
8 0
Every 2 million years the amount is halved
0 million = 200g
2 million = 200g/2 = 100g
4 million = 100g/2 = 50g
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