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
AnnZ [28]
3 years ago
9

You take a sample of water that is at room temperature and in contact with air and put it under a vacuum. Right away, you see bu

bbles leave the water, but after a little while, the bubbles stop. As you keep applying the vacuum , more bubbles appear. A friend tells you that the first bubbles were water vapor, and the low pressure had reduced the boiling point of water, causing the water to boil. Another friend tells you that the first bubbles were gas molecules from the air (oxygen, nitrogen , and so forth) that were dissolved in the water. Which friend is mostly likely to be correct? What, then, is responsible for the second batch of bubbles?
Chemistry
1 answer:
Artist 52 [7]3 years ago
7 0

Answer:

The second friend is mostly correct.

Explanation:

When pressure decreases, gas solubility decreases. The bubbles are gas molecules that were dissolved in the water at atmospheric pressure. The bubbles started coming out as a result of the decrease pressure. The second bubbles would be water vapor because as the pressure continue to decrease, the amount of vapor pressure  ( vapor leaving the surface of the liquid ) equals the external pressure and water begin to boil. So the second bubbles must be water vapor.

You might be interested in
How many moles of KNO3 are in 500 mL of 2. 0 M KNO3? mol KNO3.
8090 [49]

The moles can be defined as the mass of the substance with respect to molar mass. The moles of potassium nitrate is 1 mol.

<h3>How to calculate moles of a substance?</h3>

The moles of a compound can be calculated from:

\rm Moles=\dfrac{Mass}{Molar\;mass}

The molarity can be defined as the moles of solute in a liter of solution.

The molarity can be expressed as:

\rm Molarity=\dfrac{Moles\;\times\;1000}{Volume\;(mL)}

The molarity of potassium nitrate solution is 2 M, and the volume is 500 mL.

The moles of potassium nitrate is given as:

\rm 2\;M=\dfrac{Moles\;\times\;1000}{500\;mL}\\ Moles=\dfrac{2\;\times\;500}{1000}\;mol\\ Moles=1\;mol

The moles of potassium nitrate in 2 M, 500 mL solution are 1 mol.

Learn more about moles, here:

brainly.com/question/15209553

4 0
1 year ago
Molecules that contain nothing but hydrogen and carbon are
romanna [79]
Hydrocarbons. They usually burn. In fact, I can't think of one that does not.
4 0
3 years ago
using the two ways you have learned about between temperature, pressure and volume, what are two ways you could increase the gas
IrinaVladis [17]

Answer:

I don't know do you know tell me please

4 0
2 years ago
What is an appropriate stepwise synthesis for the following synthesis that uses ethyl 3-methylbutanoate as the only source of ca
gayaneshka [121]

Explanation:

Using ethyl 3-methylbutanoate as your only source of carbon and using any other reagents necessary, propose a stepwise synthesis for the following conversion.

I need help drawing the product formed in step three.

Thanks!

6 0
3 years ago
Explain the effect of Earth’s gravity on objects on the surface of Earth.
xeze [42]
This is the sample answer: 
Gravity pulls objects toward Earth at a rate of 9.8 m/s2<span>. Weight is the result of gravity's pull on a mass on Earth's surface.

</span>
8 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement best describes the behavior of most soilds?
    9·2 answers
  • A molecule that oxidized gains electrons and energy. true or false
    9·1 answer
  • Electrical conductivity is an example of what property
    15·2 answers
  • Calculate the wavelength and frequency of an emitted photon of gamma radiation that has energy of 2.93 × 109 J/mol
    14·1 answer
  • Suggest two reasons why copper should not be disposed of in landfill sites
    9·1 answer
  • 50 POINTS! <br><br><br><br>Which SIX statements are correct about CELLULAR RESPIRATION?
    15·2 answers
  • PLEASE HELP I got this wrong on an exam but got it wrong and i don’t know why!
    9·1 answer
  • What particles are affecting by strong nuclear forces?
    13·1 answer
  • Mature elephants consume an average of 600 pounds of food per day. If an elephant
    10·1 answer
  • Which of the following are acids by the Bronsted-Lowry Definition:
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!