Students at the University of North Texas and the Universityof Washington built

Question

Students at the University of North Texas and the Universityof Washington built a car propelled by compressed nitrogengas. The gas was obtained by boiling liquid nitrogen storedin a 175.0 L tank. What volume of N2 is releasedat 0.980 atm of pressure and 25 degrees C from a tank full ofliquid N2 (d = 0.808 g/mL)? ___ L Students at the University of North Texas and the Universityof Washington built a car propelled by compressed nitrogengas. The gas was obtained by boiling liquid nitrogen storedin a 175.0 L tank. What volume of N2 is releasedat 0.980 atm of pressure and 25 degrees C from a tank full ofliquid N2 (d = 0.808 g/mL)? ___ L

Explanation / Answer

Mass of N2 = volume x density of liquid

= 175.0 x 1000 x 0.808 = 141400 g


Moles of N2 = n = mass/molar mass of N2

= 141400/28.01 = 5048.2 mol


Ideal gas equation: PV = nRT

Volume of N2 gas = V = nRT/P

= 5048.2 x 0.08206 x (273.15 + 25)//0.980

= 1.26 x 10^5 L

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