What percentage of 145X (t1/2 = 768.7 h) would remain after 505.4 hours. Use the formula with 0.693 instead of ln 2. The data for element X does not exist. All numbers are hypothetical

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Q: What percentage of 149X (t1/2 = 81.9 h) would remain after 37.0 hours. Use the formula with 0.693…

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