Question

1. A patient with emphysema is breathing pure O₂ through a face mask. The cylinder of O₂ contains 0.0260 m³ of O₂ gas at a pressure of 16.0 MPa.

What volume would the oxygen occupy at atmospheric pressure (and the same temperature)? (Atmospheric pressure = 101,325 Pa.)

______m^3

2. A patient with emphysema is breathing pure O₂ through a face mask. The cylinder of O₂ contains 0.0260 m³ of O₂ gas at a pressure of 16.0 MPa.

If the patient takes in 8.00 L/min of O₂ at atmospheric pressure, how long will the cylinder last?

________h

3. Incandescent lightbulbs are filled with an inert gas to lengthen the filament life. With the current off (at T = 20.0°C), the gas inside a lightbulb has a pressure of 130 kPa. When the bulb is burning, the temperature rises to 75.4°C. What is the pressure at the higher temperature?

___________kPa

Answer 1