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bezimeni [28]
2 years ago
10

How is an echo formed?

Chemistry
2 answers:
mojhsa [17]2 years ago
5 0

Answer: B

Explanation: echos cannot be made from light waves so C and D are out, and sound waves cannot travel into a surface. Also echos is sound waves bouncing that’s why in an empty room without furniture there’s an echo.

Finger [1]2 years ago
3 0

Answer:

It is none. Echo is formed when sound waves hit a hard surface.

Explanation:

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Answer:

it is a solid

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2 years ago
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2 years ago
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In the reaction Mg(s) + 2HCl(aq) → H2(g) + MgCl2(aq), how many moles of hydrogen gas will be produced from 250.0 milliliters of
satela [25.4K]
Mg + 2HCl = H₂ + MgCl₂

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5 0
3 years ago
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Serjik [45]

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4.85 x 10^25

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6 0
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Which of the following is a type of matter
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