Question

Calculate the number of molecule of sulphur (S8) present in 16g of solid sulphur (atomic mass of S=32)

Answer 1

MW of S8 = 32 × 8 = 256g/mol
mass = 16 g
Moles = mass /MW
= 16/256
= 1/16
Molecules = moles × Na
= 1/16 × 6.023×10²³
= 3.764 × 10²²
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Answer 2

$<b>$☺ Hello mate__ ❤

◾◾here is your answer.

1 mole of solid sulphur (S8)

= 8 × 32g

= 256g

i.e., 256g of solid sulphur contains

= 6.022 × 10^23 molecules

Then, 16g of solid sulpur contains

(6.022×10^23 /256 )16 molecules

= 3.76 × 10^22 molecules (approx)

____________________________

I hope, this will help you.☺

Thank you______❤

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