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mixas84 [53]
3 years ago
15

Which of the following is the best indication that a chemical change has taken place?

Chemistry
2 answers:
kupik [55]3 years ago
4 0

Answer:

C

Explanation:

It is C because the change is inversible, that means that it is a chemical change.

Ugo [173]3 years ago
3 0
C the change is reversible I think
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Answer:

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What is the frequency of green light that has a wavelength of 5.14 x 10^-7m?
nata0808 [166]

Answer:

Frecuency = 5,83x10⁻⁷ Hz

Explanation:

The equation that connects wavelenght and frequency is given by:

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In our case, λ=5,14x10⁻⁷ m , so replacing in our previous formula, this gives us the final result of ν (frequency for green light) of 5,83x10¹⁴ Hz (or Herzt)

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