Question

Porfa ayudenmen en esta pregunta?
Cual es el peso molecular de un gas si 0,797gr. Estan ocupando un volumen de 1,22L A 27°C Y 1 atm. De Presion

Answer 1

Ley de los gases ideales

V · P = n · R · T     sustituir n

n = masa/Mm

V · P = masa · R · T           despejar Mm
           ``````````
             Mm

Mm = m · R  · T
         ``````````````
             V · P

R = 0.0821 (L atm/mol K)
T = 27 ºC + 273 = 300 K
P = 1 atm
V = 1.22 L
m = 0.797 g

Mm = 0.797 g · 0.0821 (L atm / mol K) · 300 K
         ````````````````````````````````````````````````````````
                             1 atm · 1.22 L

Mm = 16.09 g/mol