Question

calculate the number of molecules in 16gm of S8​

Answer 1

Answer:

96×10^23

Explanation:

1gramS8 molecule contain 6×10^23

as the molecule contain 16grams

number of molecule contain 16×6×10^23

=96×10^23

Answer 2

Given :

Mass of S₈ = 16 g

To find :

Number of molecules of S₈ in given Mass.

Formula used :

• Number of mole = mass/Molar mass
• Number of molecules = Number of mole × Avogadro's Number

Solution :

First of all we need to find molar mass of S₈

➝ Molar mass of S₈ = 8 × atomic mass of S atom

➝ Molar mass of S₈ = 8 × 32 g/mol

➝ Molar mass of S₈ = 256 g/mol

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Number of mole of S₈ = mass ÷ Molar mass of S₈

➝ Number of mole of S₈ = 16g ÷ 256g/mol

➝ Number of mole of S₈ = 0.0625 mol

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Number of molecules = Number of mole of S₈ × Avogadro's Number

➝ Number of molecules of S₈ = 0.0625 × 6.02 × 10²³

➝ Number of molecules of S₈ = 0.37625 × 10²³

➝ Number of molecules of S₈ = 3.7625 × 10²²

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ANSWER :

3.7625 × 10²² molecules