How many molecules are in 13.5g of sulfur dioxide, so2?

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Chemistry

19 January, 09:37

How many molecules are in 13.5g of sulfur dioxide, so2?

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Madyson Solomon · Answer 1

Answer is: there are 1.27·10²³ molecules of sulfur dioxide.

m (SO₂) = 13.5 g.

n (SO₂) = m (SO₂) : M (SO₂).

n (SO₂) = 13.5 g : 64 g/mol.

n (SO₂) = 0.21 mol.

N (SO₂) = n (SO₂) ·Na.

N (SO₂) = 0.21 mol · 6.022·10²³ 1/mol.

N (SO₂) = 1.27·10²³.

n - amount of substance.

M - molar mass of substance.

Na - Avogadro number.