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gWhat is the concentration of a solution made by diluting 5.0 mL of a 3.2 M glucose solution by adding enough water to make a 40.0 mL solution

Respuesta :

maacastrobr

Answer:

0.4 M

Explanation:

To solve this problem first we calculate the number of glucose moles, using the first volume and concentration:

  • 3.2 M * 5.0 mL = 16 mmol glucose

This number of moles remains the same throughout the dilution process. So we can now calculate the concentration of the second solution, dividing the number of moles by the second volume:

  • 16 mmol / 40.0 mL = 0.4 M

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