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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
What do you think would happen to a rock after billion years?
ANEK [815]

Answer:

Explanation:

It probably would have been broken down to smaller pieces and spread out around the world. Hope this help! :)

3 0
3 years ago
Which is element number 10?<br><br> Please Help!!
tia_tia [17]

Answer:

Neon is a chemical element with the symbol Ne and atomic number 10. It is a noble gas.

6 0
3 years ago
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4.62 ) (a) Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to form exactly 750 mL
Gelneren [198K]

Answer:

a. [Na₂CrO₄] = 0.10 M

b. 0.017 moles of KBr

Explanation:

Molarity means a sort of concentration which indicates the moles of solute over 1L of solution.

We determine the moles of solute: 12.5 g / 162g/mol = 0.0771 moles

We convert the volume of solution from mL to L = 750 mL . 1L/1000mL = 0.750L

Molarity (mol/L) → 0.0771 mol / 0.750L = 0.10 M

b. In order to determine the moles of solute, with the molarity of solution and the volume we assume:

Molarity = moles of solute /volume of solution

Then, Molarity . Volume of solution (L) = moles of solute

We convert the volume of solution from mL to L = 150 mL . 1L/1000mL = 0.150L

0.112 mol/L . 0.150L = Moles of solute → 0.017 moles of KBr

5 0
4 years ago
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Word equation of nitrogen + oxygen —--&gt; ammonia
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Answer:

it is ammonia nitro oxide

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3 years ago
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