For absorption spectra to exist
A) the light source must be a gas.
B) partially absorbent material must exist between the light source and the spectroscope slit.
C) the spectroscope must be equipped with an absorption cell.
D) all of the above
E) none of the above
Answer: B
You might also like to view...
Earth's temperature remains fairly steady, which means that Earth must return nearly the same amount of energy to space that it receives from the Sun. In what form(s) does Earth return most of this energy to space?
a. infrared light emitted by the surface and atmosphere b. ultraviolet light reflected by the surface c. visible light reflected by clouds d. visible light emitted by the surface and atmosphere e. visible light reflected by the surface
The potential outside a uniformly charged sphere is the same as if all the charge were concentrated at its center
Indicate whether the statement is true or false
Consider a situation where a skater pulls her arms inward, causing her rotation rate to speed up.Kinetic energy
a. is definitely conserved. b. is definitely not conserved. c. may or may not be conserved. d. none of the above
A silicon diode has a voltage to ground of 117 V from the anode. The voltage to ground from the cathode is 117.7 V. The diode is
a. forward-biased. b. reverse-biased. c. conducting. d. shorted.