Here ya go if you need the link we’re I found this answer key https://studylib.net/doc/8708211/exam-2---chemistry
You can't usually just use a single spectrum line to confirm the identity of an element because there are cases that the emission line id not clearly defined. When the emission line is very weak compared to surrounding noise, in which case the more datapoints you have to build up confidence for the existence of a particular emission spectra, the better.
Answer:
sorry I don't know
Explanation:
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D. metamorphic rock melts and crystallizes to become igneous rock <span />