Question

If one gram of sulphur contains x atoms, calculate the number of atoms in one gram of oxygen element, (Atomic masses S = 32 u ; O = 16 u)

Answer 1

Answer:

6.022e23

Explanation:

Avogadro's no

Answer 2

Number of Atoms in 1 gm of Oxygen is 2x Atoms

Explanation:

• 1 mole of sulphur = Gram atomic mass of carbon = 32 g

Now, 32 g of sulphur = 1 mole

• 1 mole of sulphur = $\frac {1}{32}$ mole

• Thus, $\frac {1}{32}$ mole of sulphur element contains x atoms.

So, $\frac {1}{32}$ moles of oxygens will also contain x atoms.

• 1 mole of oxygen = 16 g

• Now, 16 g of oxygen = 1 mole

1 g of oxygen = $\frac {1}{16}$ mole

$\frac {1}{32}$ mole of oxygen contains = x atoms

$\frac {1}{16}$ mole of oxygen contains = $x \times \frac {32}{16}$ atoms

 = 2x atoms.