How many moles are in a 0.53-kg sample of sulphur dioxide,SO₂? (atomic masses: C = 32 u;O = 16 u)

Name: How many moles are in a 0.53-kg sample of sulphur dioxide,SO₂? (atomic masses: C = 32 u;O = 16 u)
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Quizplus · Accepted Answer

First, calculate the molar mass of SO₂: S (32 u) + 2*O (16 u) = 32 u + 32 u = 64 u. Then, convert the mass of the sample from kg to g (0.53 kg = 530 g) and divide by the molar mass to find the number of moles: 530 g / 64 g/mol ≈ 8.3 moles.

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