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masya89 [10]
3 years ago
7

When a radioactive sample decays for 2 half-lives the amount remaining will be ____ of the original?

Chemistry
1 answer:
mash [69]3 years ago
4 0
1/4 of the original.
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Heat is something you can't control

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water is 11.19% hydrogen and 88.1% oxygen by mass. Lake superior contains about 1.2x10 kg of water. what mass of hydrogen is con
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