1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
maria [59]
3 years ago
6

Most full scuba tanks have a pressure of between 1,800 p.s.i. and 3,000 p.s.i. (pounds per square inch). Approximately 70 to 85

cubic feet of air has been squeezed into the tank. When a diver takes his air tank to be refilled, the dive shop will hook his tank to a compressor with a pressure hose and place his tank in a tub of water while it is being filled. What reasons can you give for placing the tank in water?
Chemistry
2 answers:
ArbitrLikvidat [17]3 years ago
8 0

Answer: The Diver's air tank is filled with oxygen gas.

The filling of air tank while keeping in water can be explained in reference to the Charles' Law.

Charles' Law: It states that the volume of the ideal gas is directly proportional to the absolute temperature at constant pressure.

                        V\propto T    (at constant Pressure)

The Scuba tank contains cold water and is present at high pressure. The gas which is put in the tank will be compact and would not expand. As the temperature is low inside the tank, hence by using Charles' Law, the volume will also decrease inside the tank.

When the air tank is filled, it is always kept in a tub of water because the pressure is high and hence, more oxygen gas can be filled inside the air tank.


Vlad [161]3 years ago
7 0
<span>I would think that because water has a high specific heat, the water in the tank must be cold. Because the scuba tank is at high pressure, and the water is cold, the gas put into the tank will be more compact, and will not expand. According to Charles' law, as temperature increases, volume increases and because in this situation temperature is decreasing, volume will decrease. It would be great to keep the tank into the water because under these conditions, you can store more oxygen into the tank per square inch.

I hope this helps:)</span>
You might be interested in
Water freezes at 0∘C and CO freezes at −205∘C. Which type of intermolecular force accounts for this difference in freezing point
Assoli18 [71]

Explanation:

The dipoles in CO are in opposite directions so they cancel each other out, although CO₂ has polar bonds, it is a nonpolar molecule. Therefore, the only intermolecular forces are London dispersion forces. Water (H2O) has hydrogen bond present which is a polar bond which has a high intermolecular force.

Water which has high intermolecular force will require more energy that is a higher temperature to overcome these attractions and are pulled together tightly to form a solid at higher temperatures, so their freezing point is higher.

As the temperature of a liquid decreases, the average kinetic energy of the molecules decreases and they move more slowly.

CO with lower intermolecular forces will not solidify until the temperature is lowered further.

6 0
3 years ago
As a central atom, sulfur can take more than eight electrons in its valence shell.
vodka [1.7K]

Sulphur is located in the third period and group 16. The general electronic configuration of group 16 is ns^{2} np^{4} therefore the maximum number of valency electrons in group 16 is 6. The electronic configuration of sulphur is [Ne] 3s^{2} 3p^{4}3d^{0}. Sulphur has six valency electrons whereas sulphur can have more than eight electrons in its valency shell as it have an empty d-shell electrons can accumulate in the empty d-shell. The complete d-shell and the P_{z} orbital will be empty. As each orbital can accept 2 electrons, sulphur can have 12 valency electrons in its valency shell.

3 0
3 years ago
Read 2 more answers
6. A hot potato is sitting out on the counter. After 3 hours, you pick up the 5 points
vovikov84 [41]

Answer:

the heat differs to the air as heat is energy and energy likes to travel

3 0
2 years ago
Which of the following properties of silver does not explain why this metal is often used in jewelry?
Daniel [21]
C
The high conductivity of silver does not promote its use in jewelry. 
3 0
3 years ago
Balancing Redox Reactions<br> VO2++MnO4 V(OH)4++Mn2+(acidic)
Natasha_Volkova [10]

Answer:

MnO4- + 5 VO +2 + 11 H2O = 5 V(OH)4+ + Mn+2 + 2 H+

Explanation:

3 0
3 years ago
Other questions:
  • A freight train rushed down the track going south at 60 mph. This is an example of ____.
    10·1 answer
  • Solve using significant figures <br> 8.647 + 45.969
    15·2 answers
  • Chemical reactions occur when molecules or atoms collide so that the bonds between atoms break and new bonds form. breaking the
    9·1 answer
  • According to Newton's first law of motion, what happens to a marble traveling in a straight line on a flat hardwood floor that g
    13·2 answers
  • Which equation represents the combined gas law?
    14·2 answers
  • Do I know if a substance is ionic or molecular
    11·2 answers
  • Can someone please explain me the difference between physical changes and physical properties and of chemical changes and chemic
    15·1 answer
  • According to Boyle’s law, when the pressure of a gas increases at constant temperature, its volume
    15·1 answer
  • Which of the following can be calculated from the mass of the reactants used in a chemical reaction?
    9·2 answers
  • The concentration of hydronium ions is greater than 1 x 10^−7 for acidic solutions. True False
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!