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Why do molecules absorb at various wavelengths (nm)? Please respond in your own words. Answer directly.
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- Which of the following variables does absorbance not depend upon? A. Molar absorptivity of the solute. B. Path length of the sample. C. Concentration of the solute in solution. D. Conductivity of the sample.Which of the following variables does absorbance not depend upon? Conductivity of the sample. Path length of the sample. Concentration of the solute in solution. Molar absorptivity of the solute.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.
- how to use microwave radiation to accurately measure bong lenghts ?Differentiate between constructive interference and destructive interference?The relationship between photons of light at various energies and wavelengths is Given by E=hv , c=v(wavelength) Therefore, when a photon of energy at wavelength of 275 nm is compared with photons of energy at wavelength of 390 nm and higher we have a decrease in the energy and its dissociation energy that would attack polymeric or chemical bonds of various structures. Therefore, the higher the wavelength the lower the frequency or higher wavelengths have less energy than lower wavelengths 275nm is far greater energy than 390nm or higher. Given we have established light is composed of photons and high energy gamma radiation are also photons but of higher energy does the math for photochemistry given above apply to higher sources of photon energy from gamma and other sources of radiation? If so why or why not. If there is a relationship what equations exist to compare and predict equivalence of standard electromagnetic model wavelength for actinic and visible and IR radiations to more…
- Chlorophyll absorbs photons strongly in two bands, one between 340 and 450 nm and the other between 650 and 680 nm. Chlorophyll collects and transfers the photon energy to fix CO2 into carbohydrate CH2O units according to CO2 + H2O → (CH2O) + O2 where the (CH2O) indicates one carbon unit of the carbohydrate. The average enthalpy change for the addition of a carbon unit to a carbohydrate is ΔH = 485 kJ/mol. What is the minimum number of 660 nm photons needed by chlorophyll to add a carbon unit to a carbohydrate? (Remember that there’s no such thing as a partial photon.) Please no copy paste from anywhereChlorophyll absorbs photons strongly in two bands, one between 340 and 450 nm and the other between 650 and 680 nm. Chlorophyll collects and transfers the photon energy to fix CO2 into carbohydrate CH2O units according to CO2 + H2O → (CH2O) + O2 where the (CH2O) indicates one carbon unit of the carbohydrate. The average enthalpy change for the addition of a carbon unit to a carbohydrate is ΔH = 485 kJ/mol. What is the minimum number of 660 nm photons needed by chlorophyll to add a carbon unit to a carbohydrate? (Remember that there’s no such thing as a partial photon.) Please no copy pasteCite one research article that used an IR spectrophotometer in their study and discuss how they used the instrument to generate their data and how they used the data of IR in answering their hypothesis.
- What is the chemistry of how spf blocks uv rays from the sun Please please please answer as fast as possible pleaseIn order for a molecule to absorb IR light the ________ must change during a vibrational mode. Can N2 absorb IR light? Can HCl absorb IR light?(a) At which wavelengths did each solution have the highest % transmittance? (b) Do the wavelengths (at the highest % transmittance) match to the color of the solution in the visible light range? Why or why not? Purple: 380 – 450 nm Green: 495 – 570 nm
