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Likurg_2 [28]
3 years ago
9

Describe how an atom of copper can emit different colors of light. * Your answer

Chemistry
1 answer:
miv72 [106K]3 years ago
3 0

Answer:

Electrons on atoms have different amounts of energy proportional to the distance of their orbital from the nucleus. So in the flame, electrons get excited and pushed to higher energy levels by the heat energy. When they fall back down, they give off photons of light of different colors, based upon how far they fall.

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Given a magnesium value of 4.5mg/dL, what is the result in SI units?
DaniilM [7]

Answer:

4.5x10^{-5}\frac{kg}{L}

Explanation:

Hello!

In this case, since the density in the international system of units is given in terms of kg for the mass and L for the volume, we need to perform a process of units conversions from mg and dL to kg and L as show below:

4.5\frac{mg}d{L}*\frac{1kg}{1x10^6mg}  *\frac{10dL}{1L} \\\\4.5x10^{-5}\frac{kg}{L}

Best regards!

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