A mixture of nitrogen (N_2) and helium has a volume of 290 mL at 36 degree C and a total pressure of 757 mmHg. If the partial pressure of helium is 28 mmHg, what is the partial pressure of the nitrogen? Express your answer using three significant figures. P_N_2 = 729 mmHg At this temperature and at the partial pressure in Part A, how many moles of nitrogen gas are in this container assuring ideal conations? Express your answer using two significant figures.