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Carotenoids, present in all organisms' capable of photosynthesis, extend the range of light absorbed by the organism. They exhibit maximal capacity for absorption of light in the range of 440-470 .nm
Compute the energy in kilojoules represented by absorption of an Avogadro's number of photons of wavelength 465nm.
A flask contains a mixture of hydrogen and oxygen. The pressure exerted by these gases is 785 mmHg. If the partial pressure of the hydrogen in the mixture is 395 mmHg, what is the partial pressure of the oxygen?
The following data were obtained when a Ca2+ ion-selective electrode was immersed standard solutions whose ionic strength was constant at 2.0 M.
Why is it important to use lambda max (measured from spectroscope)? What I am unclear about is why it is important to know it before creating a standard curve?
What is the average speed of the sprinter if A sprinter set a high school record in track and field, running 200. M in 22.0s .express your answer in kilometers per hour?
Determine the equilibrium constant of a weak acid if you titrate 25.00 mL of the acid (diluted with 50.00 mL of water) with 1.00 M NaOH
A proton in a magnetic field has two spin states
Why is anhydrous sodium sulfate added to the organic solution remaining after the extractions with 6M NaOH
What is the molality of the 45.0 mass % ethylene glycol (C2H6O2) solution in the water
Laser atomic fluorescence excitation and emission spectra of Na in an air acetylene flame are shown. in the excitation spectrum the laser was scanned through various wavelengths while the detector monochromator was held fixed near 589 nm.
Predict the delta H, delta S, delta V and delta G for dissolving 60. g benzene (C6H6) in 100. g of toluene (C7H8) at 298 K. State any assumptions made.
Aspirin C9H8O4 is a weak monoprotic acid. To determine its acid-dissociation constant, a student dissolved 2.00 g of aspirin in 0.600 L of water and measured the pH. What was the Ka value calculated by the student if the pH of the solution was 2.6..
calculate the heat absorbed or lost by the aqueous solution qaq in joules assuming that the specific heat capacity
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