En relación a las unidades FÍSICAS de concentración es FALSO: *
a) Corresponden a unidades de concentraciones porcentuales
b) Indican el porcentaje de soluto presente en la solución
c) Un ejemplo de este tipo de unidades de concentración es la Molaridad
d) Indican de forma cuantitativa y no de forma cualitativa la concentración de una solución
e) A través de ellas se puede determinar la concentración de una solución
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Ответ:
0.313 mole of NH3
Explanation:
We'll begin by writing the balanced equation for the reaction. This is given below:
2NH3(g) + 3CuO(s) → 3Cu(s) + N2(g) + 3H2O(g)
The number of mole of ammonia (NH3) required to react with 0.470 mole of copper(ll) oxide (CuO) can be obtained as follow:
From the balanced equation above,
2 moles of NH3 reacted with 3 moles of CuO.
Therefore, Xmol of NH3 will react with 0.470 mole of CuO i.e
Xmol of NH3 = (2 x 0.470) /3
Xmol of NH3 = 0.313 mole.
Therefore, 0.313 mole of NH3 is needed for the reaction