Question

find no of electrons in 8g of gold with molar mass179g and Avogadro's no 6.022 &10^23​

Answer 1

no. of electrons = (given mass ÷ molar mass ) × avogadro's no.

= (8 ÷ 179) × 6.022 × 10^23

= 0.044 ×6.022 × 10^23

= 0.269 × 10^23 electrons

hope it helps