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jacquelineS4232
13.07.2021 •
Chemistry
1. Necesitas un "cubo concentrado" (de esos que se usan para sazonar las comidas Maggie, ricostilla) dos vasos de vidrio o plástico y agua (caliente y fría). 2.Agrega al vaso con agua fria la mitad de un cubo concentrado y déjala reposar unos minutos. Prepara el segundo vaso con agua caliente y agrégale la otra mitad del cubo. 3. Argumenta tus observaciones en relación con lo observado y con la teoria vista. ¿Como influye la temperatura en este experimento?
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Ответ:
El cubo Maggie es un sazonador que contiene caldo de pollo y grasas, por lo que se disuelve fácilmente al entrar en contacto con el agua caliente gracias a que la temperatura que derrite las grasas y se vuelven líquidas, mientras que con el agua fría no puede disolverse así de rápido ya que las grasas siguen en estado sólido.
Ответ:
5290.7 kg of Al₂O₃ are produced in the reaction of 2800 kg of Al
Explanation:
The reaction to produce alumina is:
4 Al + 3O₂ → 2 Al₂O₃
So, let's convert the mass of Al to moles (mass / molar mass)
2800 kg = 2800000 g (Then, 2.8 ×10⁶ g)
2.8 ×10⁶ g / 26.98 g/mol = 103780.5 moles of Al
Ratio is 4:2, so with the moles I have, I will produce the half of moles of alumina.
103780.5 mol / 2 = 51890.25 moles of Al₂O₃
Now we can convert these moles to mass ( molar mass . mol )
101.96 g/mol . 51890.25 mol = 5290729.8 g
5290729.8 g → 5290.7 kg