Question

gold is one of the group Metals called the coinage metals. how many atoms of gold are in a u.s. eagle a gold alloy bullion coin with a mass of 31.1 g Au?

Answer 1

9.51 x 10²² atoms Au

Explanation:(mass: 31.1g Au)

(m. mass: 196.967 g/mol Au)

(atoms: ?)

(31.1g Au x 1 mol Au x 6.022 x 10²³ atoms Au/ 196.967g Au x 1 mol Au)