The nuclide ⁹5Nb decays by beta emission with a half-life of 35.0 days. The mass of a ⁹5Nb atom is 94.907 u. (a) How many grams of ⁹5Nb are in a sample that has a decay rate from that nuclide of 321 s¯¹? g (b) After 114 days, how many grams of 95Nb remain?

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Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.