Question

Se permitio que 10 gramos de nitrogeno líquido se calentaran hasta alcanzar la temperatura ambiente que ¿volumen ocupará el nitrogeno gaseoso a 20° C y 1 atm de presion? !

Answer 1

Aplicar Ley de los Gases Ideales

V · P = n · R · T

n = masa/Mm

1. calcular moles de N2

Mm N2 =28 g/mol

n = 10 g / 28 g/mol

n = 0.357 moles N2

2. calcular V = ?
R =  0.0821 ( L atm / mol K)
T = 20 ºC + 273 = 293 K
P = 1 atm

V =  0.357 moles x 0.0821 (atm L / mol K) x 293 K
      ````````````````````````````````````````````````````````````````
                               1 atm

V = 8.58 L N2 gaseoso