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The half-life of Palladium-120 is 5 days. After 18 days a sample of Palladium-120 has been reduced to a mass of 7 mg. What was

The half-life of Palladium-120 is 5 days. After 18 days a sample of Palladium-120 has been reduced to a mass of 7 mg. What was the initial mass (in mg) of the sample?  What is the mass (in mg) 8 weeks after the start?  You may enter the exact value or round to 4 decimal places


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