Question

Cual es la masa de un gas 1g del cual ocupa un volumen de 300ml, a18 c y 740 torr

Answer 1

 

 

760 torr --- 1 atm

740 torr --- x

X = 0.97 atm.

T = 18 + 273 = 291 K

V = 300 / 1000 = 0.300 L

R = 0.0821 (atm.L/mol K)

n= masa/Mm

P x V = n x R x T

n =  P x V
       ````````
       R x T

n =    0.97 atm x 0.300 L
       ``````````````````````````````
    0.0821 (atm.L/mol K) 291

n =0.012 moles

Mm = m/ n
 
Mm = 1 g/ 0.012 mol

Mm = 83.33 g/mol