3. You are now wearing scuba gear and swimming under water at a depth of 30.0 m. You are breathing air at 3.00 atm and your lung volume is 10.0 L. Your scuba gauge indicates that your air supply is low so, to conserve air, you make a terrible and fatal mistake: you hold your breath while you surface. What happens to your lungs? Why? 4. Oxygen gas is at a temperature of 40C when it occupies a volume of 2.30 L. To what temperature should it be raised to occupy a volume of 6.50 L