The united states has the biggest fast food market in the world. which country comes second?
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Ответ:
Ответ:
Ver explicación
Explanation:
La reacción; Mg + H2SO4 →
MgSO4 + H2 es una reacción de sustitución simple.
En una reacción de sustitución, un átomo o grupo en un compuesto se reemplaza por otro, como podemos ver claramente. el hidrógeno en el ácido fue reemplazado por Mg.
2A1 + 2HCl → 2AICI + H2 sigue la ley de conservación de la masa porque el mismo número de átomos de cada elemento se encuentra en ambos lados de la ecuación de reacción, por lo que la masa no se creó ni se destruyó.