Calculate the number of atoms in each of the following .
(ii) 52 moles of He.

Explanation

1 mol of He `6.023 xx10^23` He atoms
`therefore 52 ` moles of He contains `=(6.023xx10^23xx52)/(1)`
`=3.132xx10^23`
52 moles of He contains `3.132xx10^25` He atoms.