hellouae1975 hellouae1975
  • 10-03-2021
  • Chemistry
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13 POINTS AND BRAINIEST!!!!


How many moles of ethanol, C2H5OH are need to prepare a 25 m solution using 1200 g water?

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anfabba15
anfabba15 anfabba15
  • 15-03-2021

Answer:

30 moles of ethanol are needed to prepare a 25 m solution, using 1200 g of water

Explanation:

This a short problem of solutions:

Our solute is ethanol: C₂H₅OH

Our solvent is water-

25 m, is our solution's concentration. m means molality (moles of solute contained in 1kg of solvent).

Our solvent mass is 1200g. We convert them to kg

1200 g . 1kg / 1000g = 1.2 kg

m = mol/kg → mol = m . kg

mol = 25 mol/kg . 1.2kg →30 moles

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