The half-life of Palladium-100 is 4 days. After 12 days a sample of Palladium-100 has been reduced to a mass of 4 mg.

What was the initial mass (in mg) of the sample?

What is the mass 6 weeks after the start?

Question

The half-life of Palladium-100 is 4 days. After 12 days a sample of Palladium-100 has been reduced to a mass of 4 mg.

 What was the initial mass (in mg) of the sample?       

 What is the mass 6 weeks after the start?

anonymous · Answer

The half-life formula: A = Ao*2^(-t/h)
Where
A = resulting amt after t time
Ao = initial amt
t = time of decay
h = half-life of substance

anonymous · Answer

just plug in your numbers and you will get the answer

anonymous · Answer

how do you find initial mass?