Answer:
A. To study the chemical composition of the surface of a planet
Explanation:
Strictly speaking, a spectrometer is any instrument used to view and analyze a range (or a spectrum) of a given characteristic for a substance (for example, a range of mass-to-charge values as in mass spectrometry), or a range of wavelengths as in absorption spectrometry like nuclear magnetic radiation spectroscopy
-hope this helps!
Answer:
chemical and physical changes
Answer:
This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.
Explanation:
They are important to an atom because the fewer valence electrons that the atom holds, the less stable it becomes.
<span>((P1V1/T1)=(P2V2/T2))</span>
