Atoms And Nuclei

The decay constant for a radioactive nuclide is 1.5 \(\times\) 10\(^{-5}\) s\(^{-1}\). Atomic weight of the substance is 60 g mole\(^{-1}\), (\(N_A=6\times10^{23}\)). The activity of 1.0 \(\mu\)g of the substance is ___________ \(\times\) 10\(^{10}\) Bq.