A radioactive sample has an initial activity of 50 dpm, 20 minute later, the activity is 25 dpm. how many atoms of the readioactive nuclide were there originally ?
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A radioactive sample has an initial activity of 50 dpm, 20 minute later, the activity is 25 dpm. how many atoms of the readioactive nuclide were there originally
ANSWER IS 20
ANSWER IS 20
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