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29 November, 06:20

If we dissolve 55g of sugar (C12H22O11) in. 800 Liters of solution, what is the Molarity?

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  1. 29 November, 07:01
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    We need to use the following formula:

    Molarity = moles / liters

    1) we need to determine the moles by converting the grams to moles using the molar mass

    molar mass C₁₂H₂₂O₁₁ = (12 x 12.0) + (22 x 1.01) + (11 x 16.0) = 342 g/mol

    55 g sugar (1 mol / 342 g) = 0.161 moles

    2) plug in the values into the molarity formula

    molarity = 0.161 mol / 0.800 Liters = 0.201 M
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