Final answer:
The pressure gauge reading on a 2.5-m3 oxygen tank cannot be determined from the question as no specific pressure value was provided. Factors such as temperature, volume, and mass of oxygen would need to be considered to calculate the gauge pressure using the Ideal Gas Law.
Step-by-step explanation:
The question asks about the pressure gauge reading on a 2.5-m3 oxygen tank. However, the specific pressure value was not provided in the question, hence we cannot give a precise value. Most pressure gauges show pressure above atmospheric pressure (gauge pressure). To calculate or understand the reading of the pressure gauge on the tank, we must consider factors such as the temperature of the gas, the volume of the tank, and the mass of oxygen present. For example, in one of the scenarios provided, if oxygen is stored at a temperature of 105 K and a pressure of 3.356 atm in a 2.5 L container, we could apply the Ideal Gas Law to determine the number of moles of oxygen in the container and compare this to standard condition