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Korvikt [17]
4 years ago
9

What appearance of an acidic analyte solution containing phenolphthalein indicates the endpoint of titration with a basic soluti

on?
Chemistry
1 answer:
Svetllana [295]4 years ago
8 0

Answer:

When the solution becomes colorless

Explanation:

phenolphthalein in a base gives a purple colour. As the acid is introduced, the purple color begins to fade away. The end point of the reaction is attained when the solution becomes colorless.

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A. Match the term with its definition. (1 point)
Assoli18 [71]

Taking into account the definition of wavelength, frecuency and propagation speed:

  • Frequency: The number of waves passing a point in 1 second.
  • Wavelength: The distance between two adjacent wave peaks.
  • Velocity:  The direction and speed at which a wave is traveling.

The equation that illustrates the relationship between wave velocity, frequency, and wavelength is v = f×λ.

<h3>Wavelength</h3>

Wavelength is the minimum distance between two successive points on the wave that are in the same state of vibration. It is expressed in units of length (m).

<h3>Frequency</h3>

On the other side, frequency is the number of vibrations that occur in a unit of time. Its unit is s⁻¹ or hertz (Hz).

<h3>Propagation speed or velocity</h3>

Finally, the propagation speed is the speed with which the wave propagates in the medium, that is, it is the magnitude that measures the speed at which the wave disturbance propagates along its displacement.

The propagation speed relate the wavelength (λ) and the frequency (f) inversely proportional using the following equation:

v = f×λ

All electromagnetic waves propagate in a vacuum at a constant speed of 2,998 x 10⁸ m / s, the speed of light.

Therefore, the previous expression establishes an inversely proportional relationship between the frequency and the wavelength: The higher the frequency, the lower the wavelength and when the frequency is lower, the greater the wavelength.

<h3>Summary</h3>

In summary, the definition of frequency, wavelength and velocity are:

  • Frequency: The number of waves passing a point in 1 second.
  • Wavelength: The distance between two adjacent wave peaks.
  • Velocity:  The direction and speed at which a wave is traveling.

Finally, the equation that illustrates the relationship between wave velocity, frequency, and wavelength is v = f×λ.

Learn more about wavelength, frecuency and propagation speed:

<u>brainly.com/question/2232652?referrer=searchResults</u>

<u>brainly.com/question/7321084?referrer=searchResults</u>

<u>brainly.com/question/14946166?referrer=searchResults</u>

#SPJ1

3 0
2 years ago
A neutral pH level isof
mafiozo [28]
What are the choices?
5 0
3 years ago
Read 2 more answers
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Karolina [17]
Can you reword it im confused
6 0
3 years ago
Which energy resource has the advantage of producing clean energy that is less harmful to the environment?
AnnyKZ [126]

Answer:

The answer is wind energy.

Explanation:

I did the quiz on time4learning.

6 0
2 years ago
Pls help ASAP I’ll mark BRAINLIEST this is science btw.
Dmitrij [34]

Answer:

It should be Magnetic fields can push and pull objects without touching

but I only say with touching. Maybe it's an error on you're teachers/Prof behalf.

3 0
2 years ago
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