Question

Ayúdame a resolver estos problemas de química porfa ( los que están marcados )

Answer 1

● Ejercicio 2:
•Datos: n = 0.4 L × (0.25 mol / L ) = 0.1 mol
•PM = 132.17 g/mol
m = 0.1 mol × ( 132.27 g / 1mol ) = 13.22g

● Ejercicio 7: asumir 1L
•[ HNO3 ] : M = N
PM = 63,02 g/mol
eqHNO3 = 7.88 g / 63.02 g/eq = 0.125 eq
[HNO3] = 0.125eq / 1L = 0.125N

•[ Na2CO3 ] : 2M = N
PM = 106.1 g/mol
eqNa2CO3 = 6.5 g / 106.1g/eq = 0.061 eq
[Na2CO3] = (0.061 ÷ 2)eq / 1L = 0.03N

●Ejercicio 11:
•PM = 98.09 g/mol
n = 0.5L × (0.1 mol / L) = 0.05 mol
m = 0.05 mol × (98.09 g / 1mol) = 4.91g

●Ejercicio 12:
PM = 164.1 g/mol
n = 30 g × ( 1 mol / 164.1 g ) = 0.183 mol
V = 0.183mol × ( 1 L / 0.3 mol ) = 0.61 L