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A student placed 11.5 of glucose () in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.- mark on the neck of the flask was reached. The flask was then shaken until the solution was uniform. A 25.0- sample of this glucose solution was diluted to 0.500 . How many grams of glucose are in 100. of the final solution

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2 answers

  1. 0.500 WHAT? liters?
    11.5 g/100 = 0.115 g/mL original.
    25 mL x that = grams in 500 mL.
    Divide by 5 to find grams in 100 mL.

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  2. 42

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