a 90 c y 1 atm el metanol es un gas cuya densidae es de 1,07 mg/ml determinar cual es la masa molecular
a que presion, manteniendo su temperatura constante, la densisad es la misma
Respuestas a la pregunta
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T = 90 ºC + 273 = 363 K
P = 1 atm
d = 1.07 mg/mL
g/mL = 1.07 mg x 1 g
```````````` `````````````
1 mL 1000 mg
d = 0.00107 g/mL
R = 0.0821(L atm/mol K)
Ley de las gases ideales
P x V = n x R x T
d = m/Mm ; n = m/Mm
P x V = m x R x T
````
Mm
P x Mm = m x R x T
`````
V
Mm = d x R x T
``````````````
P
Mm = 1.07 g/L x 0.0821 ( L atm / mol K) x 363 K
``````````````````````````````````````````````````````````
1 atm
Mm = 32 g/mol del metanol
P = 1 atm
d = 1.07 mg/mL
g/mL = 1.07 mg x 1 g
```````````` `````````````
1 mL 1000 mg
d = 0.00107 g/mL
R = 0.0821(L atm/mol K)
Ley de las gases ideales
P x V = n x R x T
d = m/Mm ; n = m/Mm
P x V = m x R x T
````
Mm
P x Mm = m x R x T
`````
V
Mm = d x R x T
``````````````
P
Mm = 1.07 g/L x 0.0821 ( L atm / mol K) x 363 K
``````````````````````````````````````````````````````````
1 atm
Mm = 32 g/mol del metanol
luciadior:
y podrias contestarme a la segunda pregunta que es, a que presion, manteniendo su temperatura constante, la densidad es la mitad
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