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Sidana [21]
3 years ago
12

Air is made up of different gases, such as oxygen, nitrogen, and carbon dioxide. Which statement best describes these three comp

onents of air?
A)They are all classified as pure substances.

B)They cannot react with another substance.

C)They are chemically bonded to one another.

D)They can be classified as elements.
Chemistry
2 answers:
Inga [223]3 years ago
7 0
I think the correct answer from the choices listed above is option A. The three components of air are all <span>classified as pure substances since they are not chemically bonded so they can be separated by certain processes and be present as a pure substance. Hope this answers the question.</span>
leonid [27]3 years ago
4 0

Answer: A

Explanation: They are all classified as pure substances

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A gas with 4.0 atmospheres of pressure has a temperature of 27°C.
Gala2k [10]

Answer:

7.462

Explanation:

Well, every time that the tempurature is increased, the atmspheric pressure is increased by 0.574%. This would then mean that you would have 0.574  times

13. That would then equal 7.462. I hope this helps.

6 0
3 years ago
atmospheric pressure at elevations of 8000 feet averages about 0.72 atmospheres. Would a cabin pressurized at 500 mm hg meet fed
NeTakaya

Answer:

Yes, but it must be kept at that value and do not let it to decrease more.

Explanation:

Hello.

In this case, in order to substantiate whether the cabin meet the federal standards, we need to convert the 500 mmHg to atm and compare the result with 0.72 atm by knowing that 1 atm equals 760 mmHg:

500mmHg*\frac{1atm}{760mmHg} \\\\=0.66atm

Thus, since 0.66 atm is 0.06 atm away from the federal standard we can infer that it may meet the federal standard, however, it would not be recommended to let the pressure decrease more than that.

8 0
3 years ago
A container is filled with a mixture of gases:
Crazy boy [7]

Answer:

The pressure of Cl2 is 1, 55 atm.

Explanation:

The sum of the partial pressures of the gases that make up a gaseous mixture is equal to the total pressure of said mixture, according to Dalton's law:

P total = P02 + P N2 + P Cl2

P Cl2= P total - P02 - P N2=3,30 atm-1,0 atm -0,75 atm=<em>1,55 atm</em>

6 0
3 years ago
What do you call a small rocky or metallic object that has crashed on the surface of the Earth?
Sedbober [7]
The answer is Meteorite
3 0
3 years ago
What is the freezing point of radiator fluid that is 50% antifreeze by mass? Kf for water is 1.86 ∘c/m.
ale4655 [162]

Answer:

  • <u><em>- 1.5 °C</em></u>

Explanation:

The depression of the freezing point is a colligative property which is given by the equation:

  • ΔTf = Kf × m × i

Where:

  • ΔTf is the depression on the freezing point of the pure solute caused by the addition of a nonvolatile solute.
  • m is the molality of the solution.
  • i is the Van't Hoff factor, which accounts for the number of particles into which the solute ionizes. It is 1 for solutes that do not dissociate, which is the case of the radiator fluids.

The calculations step-by-step are in the attached file. Please, open the pdf file with the complete explanation.

Download pdf
6 0
3 years ago
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