Chemistry, 30.01.2020 18:01, alisaharnauth

The half-life of 222rn is approximately 4 days. a sealed vessel is found to contain 1.5 mg of 222rn. how much radon would have been present 12 days before this measurement was taken?

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The half-life of 222rn is approximately 4 days. a sealed vessel is found to contain 1.5 mg of 222rn....