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nadezda [96]
3 years ago
5

Reverberation in concert halls is caused by ____. a. diffraction c. diffusion b. refraction d. reflection Please select the best

answer from the choices provided A B C D
Chemistry
1 answer:
Tanya [424]3 years ago
6 0
It's D reflection. I found the answer on quizlet.
https://quizlet.com/127051840/chapter-12-sound-flash-cards/  
That is the link to the quizlet.
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3 years ago
A substance has a boiling point of 78 °C. Which of the following is true about the substance? (5 points) a It will also change f
vovangra [49]

Answer: If a substance has a boiling point of 78^{o}C then it is true that it will also change from a gas to a liquid at 78 °C while the gas loses energy.

Explanation:

The temperature at which vapor pressure of a liquid substance becomes equal to the atmospheric pressure is called boiling point of substance.

At the boiling point, liquid phase and vapor phase remains in equilibrium.

This means that as liquid phase changes into vapor phase and also vapor phase changes into liquid phase at the boiling point.

Thus, we can conclude that if a substance has a boiling point of 78^{o}C then it is true that it will also change from a gas to a liquid at 78 °C while the gas loses energy.

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