Question

question 11
1 pts
suppose you want to know the chemical composition of a distant star. which piece of information is most useful to you?
the stars toxicology report
whether the stars spectrum has more emission lines or more absorption lines
the wavelengths of spectral lines in the stars spectrum
the doppler shift of the stars spectrum
the peak energy of the stars thermal radiation

Explanation:

Each element has a unique set of spectral - line wavelengths. By analyzing the wavelengths of spectral lines in a star's spectrum, we can identify the elements present in the star, thus determining its chemical composition. A star's toxicology report is not applicable as stars are not biological entities. The number of emission or absorption lines gives some information about the physical conditions but not directly the chemical composition. The Doppler shift indicates motion and the peak energy of thermal radiation gives information about temperature, not chemical composition.

Answer:

the wavelengths of spectral lines in the star's spectrum