Question

how many Cu atoms are present in o.5 mol of copper?​

Answer 1

hey it's your ans-

mole of copper = 0.5 mol

molecular mass = 63.54 u

let,

Mole = given mass / molecular mass

given mass = mole * molecular mass

= 0.5 * 63.54

= 31.77 g

now,

No. of atom of Cu = given mass / atomic mass * Avagadro's number

= 31.77 / 63.54 * 6.02 * 10^23

= 3.01 * 10^23 atoms

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