Question

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

Answer 1

Answer:

128

Explanation:

I think it is correct answer

Answer 2

Explanation:

to calculate molecular mass of sulphur:

molecular mass of sulphur (s8) = 8xmass of sulphur = 8×32 = 256g

mass given = 16g

number of moles = mass given/ molar mass of sulphur

= 16/256 = 0.0625 moles

to calculate the number of molecules of sulphur in 16g of solid sulphur:

number of molecules = number of moles x avogadro number

= 0.0625 x 6.022 x 10²³ molecules

= 3.763 x 10²²molecules