A sealed container holds 1.00 mole of helium and 2.00 moles of nitrogen at 30.0°C. When the total pressure of the mixture is 666 mm Hg, what is the partial pressure of the nitrogen in mm Hg? Provide an answer correct to 2 significant figures. Do not use scientific notation. Do not include units in your answer. For example, if you calculate that the correct answer is 514 mm Hg, simply type "510" in the box without the quotation marks (") or units as part of your answer.