Respuesta :

Edufirst

Answer:

  • 44.5 g of solute are contained in 356g of a 12.5%(w/w) solution.

Explanation:

12.5% (w/w) is the mass/mass percentage concentration of the solution.

  • %(w/w) = (mass of solute/mass of solution) × 100

Subsititue with:

  • % (w/w) = 12.5
  • mass of solution 356g

And solve for the mass of solute:

  • 12.5 = (mass of solute / 356g) × 100

  • mass of solute = 12.5 × 356g / 100 = 44.5 g ← answer

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