1.50 moles of \( \mathrm{N}_{2} \) at \( 825 \mathrm{~mm} \mathrm{Hg} \) and \( 303 \mathrm{~K} \) are contained in a \( 34.3 \mathrm{~L} \) bottle. What is the pressure of the system if an additional 1.00 mole of gas is added to the bottle and the temperature is reduced to \( 273 \mathrm{~K} ? \)