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3g of 257Lr whose half-life is 8 days, remains after undergoing radioactive decay for 32 days. Find the original amount of substance.

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asked Jul 7, 2021 in Chemistry Form 4 by anony mous

3g of ²⁵⁷Lr whose half-life is 8 days, remains after undergoing radioactive decay for 32 days. Find the original amount of substance.

radioactivity
half-life measurements
calculations

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answered Jul 7, 2021 by anony mous

3g 8days 6g 8days 12g 8days 24g 8days 48g
Original Mass=48g

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