Given the bright-line spectrum of element X and the spectra of four mixtures: Which mixture contains element X?

Regents Chemistry Exam January 2025 Question 31

32 Given the bright-line spectrum of element X and the spectra of four mixtures:

Which mixture contains element X?

(1) Mixture A (3) Mixture C

(2) Mixture B (4) Mixture D

Solution:

All we need to do is to look at each mixture below elemt X to see which one has some lines that match to X. Mixture B matches X and has some other lines as well for the other substance. Mixture B is the correct answer.

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