Discrepancies in the experimental values of the molar mass of nitrogen provided some of the first evidence for the existence of the noble gases. If pure nitrogen is collected from the decomposition of ammonium nitrite
Its measured molar mass is 28.01. If O2, CO2, and H2O are removed from air, the remaining gas has an average molar mass of 28.15. Assuming this discrepancy is solely a result of contamination with argon (atomic mass = 39.95), calculate the ratio of moles of Ar to moles of N2 in air.
Answer to relevant QuestionsA sample of methane (CH4) gas contains a small amount of helium. Calculate the volume percentage of helium if the density of the sample is 0.70902 g/ L at 0.0oC and 1.000 atm. Methanol (CH3OH) can be produced by the following reaction: CO(g) + 2H2(g) → CH3OH(g) Hydrogen at STP flows into a reactor at a rate of 16.0 L/min. Carbon monoxide at STP flows into the re-actor at a rate of 25.0 L/ min. ...An organic compound contains C, H, N, and O. Combustion of 0.1023 g of the compound in excess oxygen yielded 0.2766 g of CO2 and 0.0991 g of H2O. A sample of 0.4831 g of the compound was analyzed for nitrogen by the Dumas ...Consider two gases, A and B, each in a 1.0- L container with both gases at the same temperature and pressure. The mass of gas A in the container is 0.34 g, and the mass of gas B in the container is 0.48 g. a. Which gas ...Freon-12 is used as a refrigerant in central home air conditioners. The rate of effusion of Freon- 12 to Freon- 11 (molar mass = 137.4 g/ mol) is 1.07: 1. The formula of Freon-12 is one of the following: CF4, CF3Cl, CF2Cl2, ...
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