(Answered) Part 1 air is a mixture of 781 nitrogen n2 2095 oxygen o2

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Part 1: Air is a mixture of 78.1% Nitrogen (N2), 20.95% Oxygen (O2), and 0.9% Argon (Ar), and 0.05% carbon dioxide (CO2). What is the mole fraction of nitrogen in air?

Part 2: On a given day, the atmospheric pressure of the air in Utah was 0.802 atm. What was the partial pressure of nitrogen in this air?

Part 3: In Death Valley, temperatures can reach up to 52.1 oC, with air pressures as high as 762.4 mmHg. How many grams of oxygen gas are in 1.89 L of this air, assuming the composition given in part 1?

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