Assume that the tank volume is 25.0 m3, the temperature 25.0°C and the gauge pressure 15.0 bar. Calculate the mass of nitrogen in the tank using the ideal-gas equation of state. Now assume that the tank volume is 35.0 m3, the temperature 25.0°C and the gauge pressure 9.00 bar. Use conversion from standard conditions to estimate the mass of nitrogen in the tank.

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Principal Quantities and EOS

A physical quantity represents the physical state of a system. It is expressed as the product of a number and unit. The basic quantities used in science are length, mass, and time. The principal quantities are the quantities that are independent of other quantities.