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aev [14]
3 years ago
15

Se disuelven 200 ml de etanol C2H6O al 70 % en volumen con 300 ml de agua calcular considerando que los volúmenes son aditivos E

l % en volumen de alcohol.
Chemistry
1 answer:
insens350 [35]3 years ago
8 0

Answer:

28%

Explanation:

Primero <u>calculamos los mililitros de etanol presentes en la primera solución</u>:

  • 200 mL * 70/100 = 140 mL etanol

Para calcular el nuevo porcentaje en volumen, dividimos los mililitros de etanol (<em>que permanecen iguales durante el proceso de dilución</em>) entre el volumen final.

  • Volumen final = 200 mL + 300 mL = 500 mL
  • % Volumen de Etanol = 140 mL / 500 mL * 100% = 28%
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