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4. The diver in Problem 2, while underwater at a depth of 20.0 m, breathes from...

4. The diver in Problem 2, while underwater at a depth of 20.0 m, breathes from the tank so that the air entering the diver’s lungs is at the same pressure as that of the surrounding water. If each breath fills the diver’s lungs to a volume of 3.70 L, and the air he breathes warms to a temperature of 30.0OC, how many breaths can the diver take before the air remaining in the tank drops to a pressure of 700 psi? (The density of seawater is 1.03 g/cc.)

problem 2. An aluminum scuba tank, which has an internal volume of 11.1 L, is filled with air to a pressure of 3000 psi when at room temperature (i.e. 20.0 OC). A diver takes the tank into seawater, where the water temperature is 46 degrees Fahrenheit (i.e. 8.00OC). To what pressure does the air in the tank drop? (The thermal coefficient of expansion for aluminum is 24.0x10-6 OC -1 .)

ONLY PROBLEM 4 NEEDED!

Answer: 160

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