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Serjik [45]
3 years ago
7

Explain how line spectra are used to identify elements and what they indicate about atoms

Chemistry
1 answer:
Advocard [28]3 years ago
3 0

Electron transitions from higher to lower energy levels cause emission of energy in the form of electromagnetic waves, each with their own specific wavelength. Because the energy levels of elements are quantized, each transition has a specific energy difference. The collection of these transitions makes up the emission spectrum and each spectrum is unique to a specific element, allowing identification.

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2 CuCl2 + 4 KI → 2 CuI + 4 KCl + I2
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That means you all you have to do for this problem is divide by 2 and cancel out the unit moles CuCI2, which leaves you with 6.75 moles I2.

Hope this helps :)

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