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Pressure for Welding

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A welder using a tank of volume 7.50×10^(−2) m^3 fills it with oxygen (with a molar mass of 32.0 g/mol) at a gauge pressure of 2.80×105 Pa and temperature of 38.0C. The tank has a small leak, and in time some of the oxygen leaks out. On a day when the temperature is 22.4C, the gauge pressure of the oxygen in the tank is 1.75×10^5 Pa.

Use 8.31 J/(mol K) for the ideal gas constant and 1.01×10^5 Pa for atmospheric pressure.

What is the initial mass of the Oxygen and what amount of mass leaked out?

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Solution Summary

The solution calculates the mass of Oxygen leaked.

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