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8 October, 19:47

58.5g of sodium iodide are dissolved in 0.5dm3. what concentration would this be?

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  1. 8 October, 20:57
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    percent by mass = (mass of solute / mass of solution) * 100 %

    mass of solute=58.5 g

    density (H₂O) = 1 g/cm³ * (1000 cm³/1dm³) = 1000 g/dm³

    mass of solvent (H₂O) = 0.5 dm³ * (1000 g/dm³) = 500 g

    mass of solution=mass of solvent + mass of solut

    mass of solution=58.5 g+500 g=558.5 g

    % mass = (58.5 g/558.5 g) * 100%=10.47% of Na.

    solution: 10.47% of Na.
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