Answer: 0.58 moles
Explanation: Using ideal gas equation:
PV = nRT
[tex]n=\frac{PV}{TR}[/tex]
P= pressure =500 kPa=4.93 atm [1 kPa= 0.009atm]
V= volume =3 L
n = no of moles = ?
R= gas constant =0.0821 Latm\molK
T= temperature = 310K
[tex]n=\frac{4.93\times 3}{310\times 0.0821}=0.58moles[/tex]