Question

Utiliza la ecuación de los gases ideales PV= n.r.t
para determinar :

a) El volumen de 1,20 moles de O2 a 27 grados c y 1 atmósfera de presión
b) El numero de moles en 10 litros de CO2 a 20 grados c y 800 torr
c) el peso molecular de un gas cuya densidad es de 1,62 g/L a 200 grados kelvin y 1,89 atmósferas.

Answer 1

1. v = ?

P = 1 atm
n = 1.20 moles
T = 27 ºC + 273 = 300 K
R = 0.0821 (L x atm / mol x K)

V = 1.20 moles  x  300 K  x  0.0821 (L x atm / mol K)
      ``````````````````````````````````````````````````````````````````
                               1 atm

V = 29.56 L

2. n = ?

V = 10 L
T = 20 ºC + 273 = 293 K
P = 800 torr
    1 torr ---- 0.001316 atm
800 torr ----      x
       x = 1.0528 atm
R = 0.0821 (L x atm / mol x K)

n =           10 L  X 1.0528  atm
      ``````````````````````````````````````````
       293 K x 0.0821 (L x atm / mol K)

n = 0.437 moles

C) Mm = ?

d =  P  x   Mm
     ````````````````
        R  x  T

Mm = d  x  R  x  T
          ````````````````
                 P

Mm =  1.62 g/L  x 0.0821 (L x atm / mol  x K) x 200 K
         ````````````````````````````````````````````````````````````````
                                   1.89 atm

Mm = 14.07 g/mol

Answer 2

la primera del compañero que respondio esta mal

Explicación: