Question

Calculate the number of molecules of sulphur (Sa) present in 32 g of solid sulphur.​

Answer 1

Answer:

So for that, firstly let us calculate the mass of solid sulphur. We know that the atomic mass of sulphur is 32. Therefore, the molecular mass of a molecule of sulphur that is S8 will be 32×8g = 256g.

Explanation:

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Answer 2

molar mass of S8 = 256 gmol-1

i.e., 256 g of solid sulphur contains = 6.022 x 1023 molecules

Then, 16 g of solid sulphur contains =6.022 x 1023 / 256 = 16 molecules

= 3.76375 x 1022 molecules

Therefore, 16 g of S8 contains 3.76 x 1022 molecules.