What is the purpose of the two "slits" between the sample and prism? O to block the emitted light to make a narrow beam of emitted light O to disperse the emitted light

(Select the correct answer from each dropdown menu for questions a and b below.) A substance absorbs wavelengths of light in the range of 550 - 750 nm. a) Approximately what wavelength range in the visible region is being transmitted? v [ Select ] 550 - 700 nm 400 - 500 nm 400 - 750 nm ; are emitted from a source and seen by your eyes, your brain perceives a single color as a blend of the individual emitted wavelengths. The substance described above would appear as which (one) color? [ Select ]

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The absorbance of various wavelengths of light by a solution were measured. How does absorbance relate to the intensity of light that is transmitted through the solution and measured by the detector?

1. Spectrometry involves measurement of a) interactions between light and matter b) wave behavior of light c) particle behavior of light d) chemical changes induced by light absorption e) none of these 2. The wave model of electromagnetic radiation is based on propagation of energy via a) oscillating electrical fields b) oscillating magnetic fields c) coupled oscillating electric and magnetic fields d) quantum particles called photons e) quantum particles called phonons 3. The process of "emission" involves a transfer of energy a) between identical atoms or molecules b) between conjugate redox partners c) from light to matter d) from matter to light e) between different phases or states of matter 4. The relation between the energy of a light wave and its wavelength is described by a) Beer's law b) the Planck equation c) the Boltzmann equation d) the Nernst equation e) Avogadro's law 5. What property of a molecule changes when it absorbs a light wave in the visible region of the…

most 32 When the copper solution was heated in the flame, you saw a bluish green color. Explain how you might experimentally show if only one wavelength of light is being emitted, or if the green color results from a mixture of light of various wavelengths.

Light from an sodium bulb emits ____________________, while the sun emits ____________________. a.  a continuous spectrum; a line spectrum   b.  absorbed light; reflected light   c. a line spectrum; a continuous spectrum   d. photons; electrons   e.  reflected light; absorbed light

Describe what happens when atoms or molecules absorb light?

2. IR light has a frequency of 2.0 x 1015 Hz.       a. Calculate the wavelength of IR light.        b. Calculate the energy of IR light.

Why do you think the chemicals have to be heated in the flame first before the colored light is emitted? A) the heat excites electrons and light is emitted upon relaxation B) the heat ionizes the salts C) the heat removes solvent (water) so that the light from the salts is visible D) the combustion products in the flame undergo electron transfer reactions with the salts