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tatuchka [14]
3 years ago
8

La solución salina contiene 0.900 gramos de NaCℓ, masa molar = 58.5g / mol, en 100 ml de solución acuosa. La concentración salin

a, expresada en mol / L, es igual a:
Chemistry
1 answer:
VladimirAG [237]3 years ago
4 0

Answer:

0.154 mol/L

Explanation:

Asumamos que tenemos 100 mL de solución, de ser así tendríamos 0.900 g de NaCl. Ahora hay que <u>convertir 0.900 g de NaCl en moles</u>, usando su <em>masa molar</em>:

  • 0.900 g ÷ 58.5 g/mol = 0.0154 mol

Con el<em> número de moles y el volumen</em> (en litros), se procede a <u>calcular la concentración en mol/L</u>:

  • 100 mL ⇒ 100 / 1000 = 0.100 L
  • Concentración = 0.0154 mol / 0.100 L = 0.154 mol/L
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