Question: A chemist wishing to do an experiment requiring 47Ca2+ (half-life = 4.5 days) needs 5.0 g of the nuclide. What mass of 47CaCO3 must be

A chemist wishing to do an experiment requiring 47Ca2+ (half-life = 4.5 days) needs 5.0 µg of the nuclide. What mass of 47CaCO3 must be ordered if it takes 48 h for delivery from the supplier? Assume that the atomic mass of 47Ca is 47.0.

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