martin7058
martin7058 martin7058
  • 09-03-2021
  • Chemistry
contestada

cuantos gramos de hidróxido de calcio se necesitan para preparar 875ml de solución al 2M​

Respuesta :

pstnonsonjoku
pstnonsonjoku pstnonsonjoku
  • 14-03-2021

Answer:

129,66 g

Explanation:

Desde,

Número de moles = concentración * volumen

concentración = 2 M

volumen = 875 ml

Número de lunares = 2 * 875/1000

Número de lunares = 1,75 moles

Número de moles = masa / masa molar

masa molar de hidróxido de calcio = 74.093 g / mol

1,75 moles = masa / 74,093 g / mol

masa = 1,75 moles * 74,093 g / mol

masa = 129,66 g

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