Question

calculate the no.pf atoms present in 40 g of sulphur....given atomic mass of S is 32

Answer 1

Ans:-

Given

Mass = 40g

molar atomic mass = 32 g/mol

No. of moles = mass / molar mass

= 40/32 mol

= 1.25 mol

No. of atoms = no. of moles x Avogadro's no.

= 1.25 x 6.022 x 10^23

= 7.53 x 10^23 atoms