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  • 20-10-2022
  • Physics
contestada

The half-life of Hafnium-156 is only 0.025 seconds. If the original sample is 560 g. how much Hafnium-156 will still be radioactive (not decayed)
after only 0.125 seconds?

480.25 g
17.5 g
70 g
140 g

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