Question

Calculate the number of molecules of Sulphur(S8) present in 16 gram of solid Sulphur.

Answer 1

therefore 16g of S8=16 256 16= moles = 0.125 moles 1 moles of S8 molecules = 6.023*1023 number of molecules therefore 1 16 mole of S8 = 6.023*1023 number of molecules*1 16

Answer 2

$\huge\mathfrak\green{answer!}$

To calculate molecular mass of sulphur:

Molecular mass of Sulphur (S8) = 8xMass of Sulphur = 8×32 = 256g

Mass given = 16g

Number of moles = mass given/ molar mass of sulphur

= 16/256 = 0.0625 moles

To calculate the number of molecules of sulphur in 16g of solid sulphur:

Number of molecules = Number of moles X Avogadro number

= 0.0625 x 6.022 x 10²³ molecules

= 3.763 x 10²² molecules

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