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What is the half-life of argon-39 if a sample initially

What is the half-life of argon-39 if a sample initially weighing 1578 grams has reduced to 394.5 grams after 538 years?
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2. asked by T-Swizzle
3. 10 views
2. After 10 years, a 100 mg sample of argon-42 has decayed to 81 mg. Estimate the half-life of argon-42.
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2. 26 views
After 10 years, a 100 mg sample of argon-42 has decayed to 81 mg. estimate the half life of argon-42.I'm on the last part
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2. asked by Lomonoyan
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A sample of argon-39 had an original mass of 1578 grams. After 538 years, the sample is 394.5 grams. What is the half-life of
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2. 7 views
What is the half-life of argon-39 if a sample initially weighing 1578 grams has reduced to 394.5 grams after 538 years?(1 point)
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2. 15 views
A sample of argon-39 had an original mass of 1578 grams. After 538 years, the sample is 394.5 grams. What is the half-life of
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2. asked by UNKNOWN
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Why is potassium-argon dating most applicable to dating very old rocks?potassium’s long half-life potassium’s short
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2. asked by Anonymous
3. 728 views
please help me with this chemistry problem.Half-Life A radium-226 sample initially contains 0.112 mol. How much radium-226 is
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2. asked by shylo
3. 757 views
Which of the following terms refers to the time it takes for one-half of the radioactive atoms in a sample of a radioactive
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2. asked by Rainshine
3. 1,566 views
The pressure of a sample of argon gas was increased from 3.71 atm to 8.55 atm at constant temperature. If the final volume of
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2. asked by Anonymous
3. 1,037 views