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4 October, 21:08

You need 1.2 moles of H2SO4 for an experiment. You weigh out 100g of this colorless syrupy liquid. Do you have enough?

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  1. 4 October, 21:49
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    Answer is: not enough colorless syrupy liquid.

    n (H₂SO₄) = 1,2 mol.

    M (H₂SO₄) = 2Ar (H) + Ar (S) + 4Ar (O) · g/mol.

    M (H₂SO₄) = 2·1 + 32 + 4·16 · g/mol.

    M (H₂SO₄) = 98 g/mol.

    m (H₂SO₄) = n (H₂SO₄) · M (H₂SO₄).

    m (H₂SO₄) = 1,2 mol · 98 g/mol.

    m (H₂SO₄) = 117,6 g needed.

    100 g is less that 117,6 g.
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