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- Would the light from fireflies be considered an example of a fluorescence or a phosphorescence process?Calculate the wavelength of light (in nm) if the light has a frequency of (3.3000x10^14) s¯1. Use a value of (3.00x10r 8) for the speed of light. Remember 1 m = (1.0000x10^9) nm %3D Do not include units with your answer. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: х10 AnswerAt a given point in its orbit, the Moon is 2.89 x 105 miles from Earth. How long (in seconds) does it take light from a source on Earth to reach a reflector on the Moon and then return to Earth? (c = 2.9979 x 108 m/s) Type your answer...
- What is the frequency observed with a wavelengh of (4.0x10^-7) m? Answer with 2 significant figures and it must be in scientific notation. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10X rays travel fasterthan microwaves. is it true / false ?The speed of a photon (c) depends on its frequency (v) FALSE TRUE
- You are required to measure a sample that absorbs at a wavelength of 300 nm and 4 µm.What would you use as your light source? Justify your answer.Calculate the frequency of light (in s1 also known as Hz) with a wavelength of (6.000x10^2) nm. Use a value of (3.00x10^8) for the speed of light. Remember 1 m (1.0000x10^9) nm %3D Do not include units with your answer. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 AnswerTrue or false? A. Phosphorescence occurs at higher energy then fluorescence. B. Fluorescence occurs at longer wavelengths than phosphorescence. C. Fluorescence occurs at shorter wavenumbers than phosphorescence.
- Kiko wants to determine the concentration of an unknown solution which produces a green solution. However, the spectrophotometer he uses doesn't have a function to determine the analytical wavelength of the solution. What is the most probable analytical wavelength he can use for the experiment? Refer to the color wheel below.6. In your own words, explain how spectrophotometer works. List down its parts and give their corresponding functions.A protein’s concentration can be determined spectrophotometrically by mixing it with an indicator called a Bradford reagent and measuring the amount of light absorbed by the protein. Use the plot below to determine the mass of protein (in micrograms, μμg ) in 100.0 mL of the solution if its absorbance is 0.398. A. 52 B. 3.1 C. 2.4 D. 0.52 E. 0.031