A rubber object is in contact with nitrogen (N2) at 298 K and 250 kPa. The solubility of nitrogen gas in rubber is 0.00156 kmol/m3•bar. The mass density of nitrogen at the interface is
(a) 0.049 kg/m3
(b) 0.064 kg/m3
(c) 0.077 kg/m3
(d) 0.092 kg/m3
(e) 0.109 kg/m3
T=298 [K]
P_N2_gasside=250 [kPa]*Convert(kPa, bar)
S=0.00156 [kmol/m^3-bar] "Table 14-7"
C_N2_solidside=S*P_N2_gasside
M_N2=MolarMass(N2)
rho_N2_solidside=C_N2_solidside*M_N2
(e) 0.109 kg/m3
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