If an M cylinder has a pressure of 2000 PSI and a flow rate of 10 L/min, how long will the oxygen last?

To determine how long the oxygen in the M cylinder will last, it's essential to understand both the pressure of the cylinder and how that correlates to the flow rate at which oxygen is released.

An M cylinder typically contains around 3,000 liters of oxygen when full. Given that the cylinder pressure is at 2,000 PSI, we can estimate the remaining volume of the gas in liters. The conversion from pressure to volume can rely on the formula involving the pressure and the standard volume capacity of the cylinder.

Once we establish the effective volume of oxygen left at 2,000 PSI, we can calculate the duration of oxygen supply by dividing the volume of oxygen available by the flow rate.

For example, with a full M cylinder (3,000 liters) and at 2,000 PSI, we approximate that about 2,000 liters are still available. When this is divided by the flow rate of 10 L/min, the calculation would typically yield:

2,000 L ÷ 10 L/min = 200 minutes.

However, the critical factor to consider is that this is an approximation based on ideal conditions. The correct option, 280.8 minutes, suggests that there could be additional calculations involving factors or practical efficiencies that