## Fundamentals of Physics Extended (10th Edition)

$0.0127\ mole$
It is given that: Gold has a molar mass of 197 g/mol This means that 179 g of Gold comprises of 1 mole. Therefore, 2.5 g Gold comprises of $\frac{2.5\ g\times 1\ mole}{179\ g} =0.0127\ mole$