Question

How many atoms and molecules of sulphur are present in 64g of sulphur

Answer 1

Answer:

6.02 × 10²³ × 0.25 = 1.505 × 10²³ atoms.

Answer 2

Answer:

This is a question of moles testing the concept of Avogadros constant.

We begin by getting molar mass of S8.

Molar mass of one Sulphur = 32g/mol

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

Moles = mass / molar mass

Moles = 64/256 = 0.25moles

AVOGADROS CONSTANT :

1 mole = 6.02 × 10²³ atoms

The number of atoms in S8 :

6.02 × 1023 × 0.25 = 1.505 × 102³ atoms. 23

The answer : 1.505 x 1023 atoms

The answer : 1.505 x 1023 atoms23