Question

What mass of Potassium has the same number of atoms as 95.7 g of Germanium?

Answer 1

number of moles in 95.7 g of Germanium = $\dfrac{95.7}{72.64}$ = 1.317 moles

the mass of 1.317 moles of Potassium = $39.1 × 1.317$ = 51.49 g

$\therefore$ 51.49 g of Potassium has the same number of atoms as 95.7 g of Germanium.