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6 July, 22:17

You need to prepare 250. ml of a 0.600 m aqueous solution of sucrose, c12h22o11 (aq, which is used frequently in biological experiments.

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  1. 6 July, 22:41
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    Molality is a unit of measurement for concentration that is calculated through the equation,

    m = moles of solute / kg of solvent

    Recall that because water's density is approximately equal to 1 g/mL, 250 mL of water is also equal to 250 g or 0.25 kg. Substituting the known values,

    0.6 = moles of solute / 0.25 kg solvent

    moles of solute = 0.15 moles

    Then, we determine the mass of sucrose by multiplying the calculated number of moles with the molar mass of sucrose (342 g/mol). The answer would be equal to 51.3 g.
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