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100g of radioactive element X

100g of radioactive element X are placed in a sealed box. The half-life of this isotope of X is 2 days. After 4 days have
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Radioactive decay is the process by which an unstable element transforms into different element, typically releasing energy as
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An unknown radioactive element decays into non-radioactive substances. In 420 days the radioactivity of a sample decreases by 39
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An unknown radioactive element decays into non-radioactive substances. In 120 days the radioactivity of a sample decreases by 59
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during radioactive decay atoms of a radioactive element break down and change into other atoms of another element-all at oncea)
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How many half-lives does it take a radioactive substance to decay until only one-eighth of the original substance remains?a
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26. How many half-lives does it take a radioactive substance to decay until only one-eighth of the original substance remains?A)
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26. How many half-lives does it take a radioactive substance to decay until only one-eighth of the original substance remains?a
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Which of the following statements about radioactive dating is true?a. Radioactive decay is the rate at which new atoms form. b.
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what temperature would each of the following solubility be observed?a. 50g KCL in 100g H2O b. 100g NaNO3 in 100g H2O c. 60g KNO3
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2. asked by Kirby
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