Two liquids A and B have vapor pressures of $76 \mathrm{mmHg}$ and $132 \mathrm{mmHg},$ respectively, at $25^{\circ} \mathrm{C}$ What is the total vapor pressure of the ideal solution made up of (a) 1.00 mole of $\mathrm{A}$ and 1.00 mole of $\mathrm{B}$, and (b) 2.00 moles of $\mathrm{A}$ and 5.00 moles of $\mathrm{B}$ ?