A scuba diver is at a depth of 445 m, where the pressure is 45.5 atm.
What should be the mole fraction of O2 in the gas
mixture the diver breathes in order to have the same partial
pressure of oxygen in his lungs as he would at sea level? Note that
the mole fraction of oxygen at sea level is 0.209.
Let mole fraction of O2 = x at 445 m
At 445 meters;
P(o2) = x * P(total) = x * 45.5 ....(1)
At sea level;
Total pressure = 1 atm = atmospheric pressure
Mole fraction at sea level = 0.209
P(o2) = 0.209 * 1 = 0.209 ....(2)
From equation (1) and (2)
x * 45.5 = 0.209
x = 0.209 / 45.5 = 0.004593 OR 0.0046 (Approx) .....Answer
A scuba diver is at a depth of 445 m, where the pressure is 45.5 atm....
3) A breathing mixture of oxygen and nitrogen is prepared for a scuba diver who is going to descend 400 ft below the ocean surface. At that depth, the diver breathes a gas mixture that has a total pressure of 8.00 atm. If the partial pressure of the oxygen in the tank at that depth is 1200 mmHg, what is the partial pressure, in atmospheres, of the nitrogen in the breathing mixture?
A diver breathes a heliox mixture with an oxygen mole fraction of 0.052. What must the total pressure be for the partial pressure of oxygen to be 0.22 atm?
The partial pressure of oxygen gas in our atmosphere is 0.21 atm. This is the partial pressure at which human lungs have evolved to be able to breathe this gas. A SCUBA diver, will thus still have to breath oxygen at this pressure even when diving way down in the water. If a mixture of helium and oxygen (heliox) in his tank is at a pressure of 7.00 atm, what must the partial pressure be of helium to keep the...
A diver takes a deep breath at the surface where the pressure is 1.0 atm, filling his lungs with 4.0 L of air. He then descends to a depth where the pressure is 0.5 atm higher than at the surface. What is the volume of air in his lungs at this depth given that the air's temperature remains the same? 4 A) 2.67 L B) 8.00 L C) 0.375 L D) 6.00 L E) 0.125 L (181 Finol 014)
5. Trimix is a breathing mixture of He, O2, and N2 used by deep-sea scuba divers. A tank of Trimix has a total pressure of 204 atm and a partial pressure of He of 143 atm. What is the mole percent of He in the mixture?
The solubility of N2 in blood at 37°C and at a partial pressure of 0.80 atm is 5.6 × 10-4 mol/L A deep- sea diver breathes compressed air with the partial pressure of N2 equal to 4.3 atm. Assume that the total volume of blood in the body is 5.4 L. Calculate the amount of N2 gas released (in liters at 37°C and 1.00 atm) when the diver returns to the surface of the water, where the partial pressure of...
A scuba diver exhales 3.32 L of air while swimming at a depth of 20.0 m where the sum of atmospheric and water pressure is 2.95 atm. By the time the bubbles of air rise to the surface, where the pressure is 1.00 atm, what is their total volume? Assume the temperature of the water body is uniform.
A diver on Earth (where the atmospheric pressure is 1.00 atm and the acceleration due to gravity is 9.80 ms-2) descends in salty sea water with a density of 1025 kgm-3. The diver is holding a balloon close to him and the volume of the balloon is V at the surface of water is 3.55 × 10-3 m3. a) What pressure does the diver experience at a depth of 18.5 m? b) What is the volume of the balloon at...
A scuba diver ascends too quickly and develops the bends. A nitrogen bubble has formed in the patient's elbow. At a depth of 58 ft, where the pressure is 2.76 atm, the bubble had a volume of 0.023 mL. Assuming a constant temperature and number of moles of nitrogen in the bubble, what volume did the bubble increase to at the surface, where the pressure is 1.00 atm? bubble volume at surface: The scuba diver is placed into a hyperbaric...
Question 4 of 11 > A scuba diver ascends too quickly and develops the bends. A nitrogen bubble has formed in the patient's elbow. At a depth of 53 ft, where the pressure is 2.60 atm, the bubble had a volume of 0.022 mL. Assuming a constant temperature and number of moles of nitrogen in the bubble, what volume did the bubble increase to at the surface, where the pressure is 1.00 atm? bubble volume at surface: ml The scuba...