Answer:
balanced equation mole ratio 5 2 mol NO/1 mol O2
10.00 g O2 3 1 mol O2/32.00 g O2 5 0.3125 mol O2
20.00 g NO 3 1 mol NO/30.01 g NO 5 0.6664 mol NO
actual mole ratio 5 0.6664 mol NO/0.3125 mol O2 5 2.132 mol NO/1.000 mol O2
Because the actual mole ratio of NO:O2 is larger than the balanced equation mole
ratio of NO:O2, there is an excess of NO; O2 is the limiting reactant.
Mass of NO used 5 0.3125 mol O2 3 2 mol NO/1 mol O2 5 0.6250 mol NO
0.6250 mol NO 3 30.01 g NO/1 mol NO 5 18.76 g NO
Mass of NO2 produced 5 0.6250 mol NO2 3 46.01 g NO2/1 mol NO2 5 28.76 g NO2
Excess NO 5 20.00 g NO 2 18.76 g NO 5 1.24 g N
Explanation:
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Answer:
![\%P/P_{hierro}=41.1\%\\\\\%P/P_{arena}=24.4\%\\\\\%P/P_{cobre}=30.8\%\\\\\%P/P_{aluminio}=0.6\%](https://tex.z-dn.net/?f=%5C%25P%2FP_%7Bhierro%7D%3D41.1%5C%25%5C%5C%5C%5C%5C%25P%2FP_%7Barena%7D%3D24.4%5C%25%5C%5C%5C%5C%5C%25P%2FP_%7Bcobre%7D%3D30.8%5C%25%5C%5C%5C%5C%5C%25P%2FP_%7Baluminio%7D%3D0.6%5C%25)
Explanation:
¡Hola!
En este caso, dado que estamos tratando con problem sobre porcentaje peso/peso de hierro, arena, cobre y aluminio, primero debemos calcular la masa inicial de estos dos primeros en la mezcla original de acuerdo con:
![m_{hierro}=300g*0.60=180g\\\\m_{arena}=300*0.40=120g](https://tex.z-dn.net/?f=m_%7Bhierro%7D%3D300g%2A0.60%3D180g%5C%5C%5C%5Cm_%7Barena%7D%3D300%2A0.40%3D120g)
Ahora si podemos calcular la masa de la mezcla final como la suma de las masas de todos los constituyentes de la mezcla:
![m_T=180g+120g+135g+2.77g=437.77g](https://tex.z-dn.net/?f=m_T%3D180g%2B120g%2B135g%2B2.77g%3D437.77g)
Finalmente, podemos calcular los porcentajes P/P como se muestra a continuación:
![\%P/P_{hierro}=\frac{180g}{437.77g} *100\%=41.1\%\\\\\%P/P_{arena}=\frac{120g}{437.77g} *100\%=24.4\%\\\\\%P/P_{cobre}=\frac{135g}{437.77g} *100\%=30.8\%\\\\\%P/P_{aluminio}=\frac{g}{437.77g} *100\%=0.6\%](https://tex.z-dn.net/?f=%5C%25P%2FP_%7Bhierro%7D%3D%5Cfrac%7B180g%7D%7B437.77g%7D%20%2A100%5C%25%3D41.1%5C%25%5C%5C%5C%5C%5C%25P%2FP_%7Barena%7D%3D%5Cfrac%7B120g%7D%7B437.77g%7D%20%2A100%5C%25%3D24.4%5C%25%5C%5C%5C%5C%5C%25P%2FP_%7Bcobre%7D%3D%5Cfrac%7B135g%7D%7B437.77g%7D%20%2A100%5C%25%3D30.8%5C%25%5C%5C%5C%5C%5C%25P%2FP_%7Baluminio%7D%3D%5Cfrac%7Bg%7D%7B437.77g%7D%20%2A100%5C%25%3D0.6%5C%25)
¡Saludos!