What fraction of the pressure is due to nitrogen? Note: fraction due to nitrogen = N₂ pressure/total pressure = PN₂ / PT What is the nitrogen mole fraction in the tank? Note: mole fraction of nitrogen = moles of N₂ / total moles = = N₂/nT hat is the relationship between the nitrogen pressure ratio in Key Question 4 and the nitrogen ole fraction in Key Question 5? Express this relationship in the form of an equation.

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