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

1 mole of solid sulphur (S₈) = 8 × 32g = 256g
i.e., 256g of solid sulphur contains = 6.022 × 10²³ molecules
Then, 16g of solid sulpur contains 6.022×10²³ /256×16 molecules
= 3.76 × 10²² molecules (approx)

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