141.500 moles of N2 in a state defined by Ti=250.0K and Vi=0.7500L undergoes an isothermal reversible expansion until Vf=50.00L. Calculate w assuming (a) that the gas is described by the ideal gas law and (b) that the gas is described by the van der Waals equation of state. What is the percent error in using the ideal gas law instead of the van der Waals equation? The van der Waals parameters for N2 are listed in Table 7.4. . Carry out your calculations of w to four significant figures. 141.500 moles of N2 in a state defined by Ti=250.0K and Vi=0.7500L undergoes an isothermal reversible expansion until Vf=50.00L. Calculate w assuming (a) that the gas is described by the ideal gas law and (b) that the gas is described by the van der Waals equation of state. What is the percent error in using the ideal gas law instead of the van der Waals equation? The van der Waals parameters for N2 are listed in Table 7.4. . Carry out your calculations of w to four significant figures