Question

what is the mass of 4 moles of sulfur molecules​

Answer 1

A sulphur molecule is octa-atomic,i.e.,having 8 atoms(S₈)

Mass of 1 mole sulphur molecule= 8(mass of a S atom)

=8(32)

=256 g

So, mass of 4 moles of sulphur molecule= 4(256)=1,024 g

Answer 2

To find -

=> Mass of 4 moles of sulphur molecules .

Points to note -

=> Here we have been asked to find the mass of 4 moles of Sulphur molecules and NOT atoms.

=> Sulphur is octaatomic in nature, this means that its atomicity is 8 and that it has the molecular formula S₈ .

=> The atomic mass of sulphur is 32 .

Finding the molar mass of sulphur molecules -

=> Molecular formula is S₈ .

=> Atomic mass is 32.

=> Molar mass = 8 * 32 => 256 grams per mole .

=> This means that 1 mole of sulphur molecules has a mass of 256 grams.

Finding the mass of 4 moles of S₈ -

=> No. of moles = 4

=> Molar mass = 256 g mol ⁻¹

=> Mass of 4 moles = 4 * 256

                                => 1024 grams.

Answer -

=> Thus, the mass of 4 moles of sulphur molecules is 1024 grams.

More to know -

=> 1 mole of any substance contains 6.022 * 10²³ molecules/atoms/ions in it.

=> The atomicity of some commonly known elements is as listed below -

• S = 8 (octaatomic)
• P = 4 (tetraatomic)
• N = 2 (Diatomic)
• Cl (& all other halogens) = 2 (diatomic)
• Ne (& all other noble gases) = 1 (monoatomic)