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2. After 10 years, a 100 mg sample of argon-42

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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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
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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. 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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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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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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A sample of argon gas at STP occupies 56.2 liters. Find the number of moles of argon and the mass in the sample
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2. asked by Emily
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A 255mL gas sample contains argon and nitrogen at a temperature of 65 degrees celsius. The total pressure of the sample is
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2. asked by Mark
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A sample of argon gas collected at STP occupies 5.51 L. How many argon atoms are in 1.00 L of this sample?What is the mass of
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2. asked by a
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QuestionCalculate the average atomic mass of a sample of a mixture of argon (Ar). The mixture is 90% argon-36 and 10% argon-38.
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