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19 August, 11:35

If a particular utility burned 2.90 million tons of coal that was 2.00% sulfur by weight, how many tons of sulfur dioxide was emitted?

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  1. 19 August, 13:47
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    Answer is: 116000 t ons of sulfur dioxide was emitted.

    Chemical reaction: S + O₂ → SO₂.

    m (S) = m (coal) · ω (S).

    m (S) = 2,9·10⁶ t · 0,02.

    m (S) = 58000 t · 10⁶ g/t = 5,8·10¹⁰ g.

    n (S) = m (S) : M (S).

    n (S) = 5,8·10¹⁰ g : 32 g/mol.

    n (S) = 1,8125·10⁹ mol.

    From chemical reaction: n (S) : n (SO₂) = 1 : 1.

    n (SO₂) = 1,8125·10⁹ mol.

    m (SO₂) = 1,8125·10⁹ mol · 64 g/mol.

    m (SO₂) = 1,16·10¹¹ g = 116000 t.
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