Question

2. An aluminum scuba tank, which has an internal volume of 11.1 L, is filled with...

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 .)

Answer: 2880 psi

Don't need #2, just #3 please.

3. For the air in the scuba tank in Problem 2, find:

(a) the rms speed of the oxygen molecules at room temperature;

(b) the rms speed of the nitrogen molecules at room temperature;

(c) the rms speed of the oxygen molecules at the colder temperature;

(d) the rms speed of the nitrogen molecules at the colder temperature;

(e) the total translational kinetic energy of the air molecules in the scuba tank.

(Note: the molar masses of nitrogen and oxygen gas are 28.0 g/mol and 32.0 g/mol, respectively.)

Answers: a) 478 m/s; b) 511 m/s; c) 468 m/s; d) 500 m/s; e) 330 kJ

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
2. An aluminum scuba tank, which has an internal volume of 11.1 L, is filled with...
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 .) Answer: 2880 psi Please show steps and pictures!
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...
Scuba Tanks: A popular scuba tank is the “aluminum 80,” so named because it can deliver...
Scuba Tanks: A popular scuba tank is the “aluminum 80,” so named because it can deliver 80 cubic feet of air at “normal” temperature (72°F) and pressure (1.00 atm, 14.7 psi) when filled with air at a pressure of 3000 psi. A particular aluminum 80 tank has a mass of 15 kg when empty. What is its mass when filled with air at 3000 psi?
A scuba tank initially has a pressure of 180 atm at 20◦ C. The volume of...
A scuba tank initially has a pressure of 180 atm at 20◦ C. The volume of the tank is 11.3 L. (a) What volume of container (in liters) would be required to store the gas at 1.00 atm at the same temperature? (b) Before entering the water, a person consumes 2.0 L of air in each breath, and breaths 12 times a minute. At this rate, how long would the tank last? (c) At a depth of 20.0 m, the...
The dimensions of a classroom are 4.70 m ? 2.55 m ? 2.90 m. (a) Find...
The dimensions of a classroom are 4.70 m ? 2.55 m ? 2.90 m. (a) Find the number of molecules of air in the classroom at atmospheric pressure and 18.0°C. molecules (b) Find the mass of this air, assuming the air consists of diatomic molecules with molar mass 28.9 g/mol. kg (c) Find the average kinetic energy of the molecules. J (d) Find the rms molecular speed. m/s (e) Assume the molar specific heat of the air is independent of...
A large diameter closed top tank is filled with a depth of 3 meters of a...
A large diameter closed top tank is filled with a depth of 3 meters of a fluid (density 1200 kg/m3). A small pipe leading from the bottom of the tank must carry the fluid some height above the fluid level in the tank. a) If a pressure of 2.5 Atmospheres is maintained in the space above the fill line in the tank how high above the fill line can the pipe carry the fluid and still provide an exit speed...
Consider a classroom filled with air. Let’s approximate air as an ideal gas of N2-molecules (nitrogen)...
Consider a classroom filled with air. Let’s approximate air as an ideal gas of N2-molecules (nitrogen) at normal conditions (P = 1 Bar and T = 300 Kelvin). Suppose the room has dimensions of 10 m by 10 m by 10 m (a pretty large auditorium). Let us also assume that N2 molecule has 5 degrees of freedom (3 translational and 2 rotational). In this problem you will need to provide numeric answers up to the first significant digit. 2.1...
A weather balloon contains 222 L of He gas at 20. °C and 760. mmHg. What...
A weather balloon contains 222 L of He gas at 20. °C and 760. mmHg. What is the volume of the balloon when it ascends to an altitude where the temperature is -40. °C and 540. mmHg? 1 What volume does 12.5 g of Ar gas at a pressure of 1.05 atm and a temperature of 322 K occupy? Would the volume be different if the sample were 12.5 g of He gas under the same conditions? How many moles...
What is the change in length of a metal rod with an original length of 4...
What is the change in length of a metal rod with an original length of 4 m, a coefficient of thermal expansion of 0.00002/ ° C, and a temperature change of 30° C? 1. 2.4 mm 2. 12 mm 3. 1.2 mm 4. 24 mm Determine the number of electrons passing through a point in the wire in 8 minutes when the current is 10 A. a. 3 * 1016 electrons b. none of these c. 4,800 electrons d. 1.6...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT