Question

Calculate the number of molecules and number of atoms present in 64g of sulphur (S8) ​

Answer 1

Answer:

The number of molecules and number of atoms present in 64g of sulphur (S8) is 1.50 x 10²³ molecules and  12.0 x 10²³ atoms respectively.

Explanation:

Molar mass of sulphur (S₈) = 8 x 32 = 256 g / mol

No. of moles of S₈ = 64 / 256 = 0.25

No. of molecules = 0.25 x 6.022 x 10²³ = 1.50 x 10²³ molecules

No. of S-atoms = 1.50 x 10²³ x  8 = 12.0 x 10²³ atoms

Answer 2

Answer:

Then 64g g contains:

1. Number of S8 molecules = GivenmassMolarmass G i v e n m a s s M o l a r m a s s x 6.022 x 1023
2. Number of S8 molecules = 64g256u 64 g 256 u x 6.022 x 1023
3. ⇒ Number of S8 molecules = 1.5 x 1023 molecules.
4. Thus, the number of molecules of sulphur (S8) is 1.5 x 1023 molecules.

Explanation:

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