Calculate the number of molecules of sulphur `(S_8)` present in 16g of solid sulphur.

Explanation

Atomic mass of sulphur = 32 u
Molar mass (m) of `S_(8)` molecule = 16 g
Avogadro.s number `(N_(0)) = 6.023 xx 10^(23)`
Number (N) of particles (molecules) = `("Given mass")/("Molar mass") xx` Avogadro.s number
`implies N = (m)/(M) xx N_(0)`
`implies N = (16)/(256) xx 6.023 xx 10^(23)`
`implies N = 0.3764 xx 10^(23) = 3.764 xx 10^(22)`