A scuba tank has a volume of 2000 cm3 . For very deep dives, the tank...

A scuba tank has a volume of 2000 cm3 . For very deep dives, the tank is filled with 50% (by volume) pure oxygen and 50% pure helium.

a.) How many molecules are there of each type in the tank if it is filled at 25 ∘C to a gauge pressure of 19 atm ?

Express your answers using two significant figures. Enter your answers numerically separated by a comma.

b.) What is the ratio of the average kinetic energies of the two types of molecule?

c.) What is the ratio of the rms speeds of the two types of molecule?

Solutions

Expert Solution

genius_generous answered 2 years ago

Next > < Previous

Related Solutions

A scuba tank has a volume of 2800 cm3. For very deep dives the tank is...

A scuba tank has a volume of 2800 cm3. For very deep dives the tank is filled with 50 percent (by volume) pure oxygen and and 50 percent pure helium. (a) How many molecules are there of each type in the tank if it is filled at 20°C to a gauge pressure of 10 atm? (b) What is the ratio of the average kinetic energies of the two types of molecule? (c) What is the ratio of the rms speeds...

A) a scuba tank has a volume of 11.0L and is pressurized to 2975 PSI. assuming...

A) a scuba tank has a volume of 11.0L and is pressurized to 2975 PSI. assuming temperature of 25C, what would the volume of the gas be if it were all released from the cylinder at an ambient pressure of 758 Torr. B) If the gas in the cylinder is 80% nitrogen and 20% oxygen, what is the mass of the gas in the cylinder.

A four-cylinder petrol engine has a swept volume of 2000 cm3, and the clearance volume in...

A four-cylinder petrol engine has a swept volume of 2000 cm3, and the clearance volume in each cylinder is 60 cm3. Calculate the air standard cycle efficiency. If the introduction conditions are 1 bar and 24 ?C, and the maximum cycle temperature is 1400 ?C, calculate the mean effective pressure based on the air standard cycle. ANSWERS(59.1%; 5.30 bar)

A scuba tank, when fully submerged, displaces 15.7 liters of seawater. The tank has a total...

A scuba tank, when fully submerged, displaces 15.7 liters of seawater. The tank has a total mass of 14 kg when empty; when full, it contains 3 kg of air. a) If you release the full (from from a spot underneath the surface of the ocean, does it sink, remain at that spot, or rise to the surface? Explain. b) If the tank is initially 2 m below the ocean surface, determine the pressure that the ocean water exerts on...

An object has a measured volume of 800 cm3. It is tied to a string and...

An object has a measured volume of 800 cm3. It is tied to a string and fully submerged in water (density of water = 1000kgm3). The string exerts an upward force of 15.0N to keep the object still. Calculate the density of the object.

Calculate the volume, in milliliters, of a solid that has a density of 7.142g/cm3 and a...

Calculate the volume, in milliliters, of a solid that has a density of 7.142g/cm3 and a mass of 232.51g

Assume that a single cylinder of an automobile engine has a volume of 523 cm3 ....

Assume that a single cylinder of an automobile engine has a volume of 523 cm3 . a. If the cylinder is full of air at 77 ∘C and 0.980 atm , how many moles of O2 are present? (The mole fraction of O2 in dry air is 0.2095.) b. How many grams of C8H18 could be combusted by this quantity of O2, assuming complete combustion with formation of CO2 and H2O?

A mixture containing hydrogen and ammonia has a volume of 183.0 cm3 at 0.00 C and...

A mixture containing hydrogen and ammonia has a volume of 183.0 cm3 at 0.00 C and 1.0 atm. The mixture is cooled to the temperature of liquid nitrogen at which ammonia freezes out and the remaining gas is removed from the vessel. Upon warming the vessel to 0.00 C and 1 atm, the volume is 80.0 cm3. Using the ideal gas law, calculate the mole fraction of NH3 in the original mixture.

A system undergoes a change in volume from 100 cm3 /mol to 225 cm3 /mol. The...

A system undergoes a change in volume from 100 cm3 /mol to 225 cm3 /mol. The pressure of the model is predicted by, P = aT + B/T^3, where a = 2.13x10-3 bar/K and ß = 2.6x10-5 bar^3K^3. Calculate AS at 350 K (in J/mol-K) b. What is the heat required at 350 K (in J/mol)? c. Calculate AU for the system described (in J/mol-K) SHOW ALL WORK.THANKS

.44 The compressed air tank of a scuba diver reads 3,200 psi at the beginning of...

.44 The compressed air tank of a scuba diver reads 3,200 psi at the beginning of a dive and 825 psi at the end of a dive. Convert each of these values to atm and mmHg. 6.48 If someone takes a breath and the lungs expand from 4.5 L to 5.6 L in volume, and the initial pressure was 756 mmHg, what is the pressure inside the lungs (in mmHg) before any additional air is pulled in? 6.52 How hot...

Subjects