The gauge pressure of the oxygen in the tank in atmospheres is 11.46 atm.
<h3>What is gauge pressure?</h3>
The gauge pressure is given as the pressure relative to the ambient atmospheric pressure. The gauge pressure can be calculated as:
Gauge pressure = System pressure - Atmospheric pressure
The system pressure of the 35-liter tank with 18.3 moles oxygen is given as:
Pressure = moles * Rydberg constant * Temperature / Volume
Pressure = 18.3 moles * 0.08 L.atm.mol⁻¹.K⁻¹ * 298 K / 35 L
Pressure = 12.46 atm
The standard pressure is given as 1 atm.
Thus, the gauge pressure of the oxygen in the tank can be:
Gauge pressure = System pressure - Atmospheric pressure
Gauge pressure = 12.46 atm - 1 atm
Gauge pressure = 11.46 atm
The gauge pressure of the oxygen in the tank in atmospheres is 11.46 atm.
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