N=m(g)/m.wt
n=85/12(1)+16(2) =1.93 moles
Each natural element has a characteristic light spectrum that helps identify it in samples of unknown substances. Spectroscopy is the practice of examining spectra and comparing them to those of known elements. Using spectroscopy methods, scientists can identify pure substances or compounds and the elements in them.
Answer:
C. yes, because it is universally applies to all objects
