Decreasing temperature rising sample concentration

Assignment Help Chemistry

Reference no: EM13683766

(a) Molecule X receives excitation as well as emits fluorescence. If the excitation wavelength is 320 nm, which of the subsequent could be the emission wavelength 270 nm, 290 nm, 320 nm, 350 nm? Explain your result.

(b) Explain how the following factors affect fluorescence quantum efficiency- increasing structural rigidity, decreasing temperature, rising sample concentration.

(d) Define the difference between fluorescence and phosphorescence.

Reference no: EM13683766

Questions Cloud

Explain which method is more sensitive fluorescence : Explain which method is more sensitive fluorescence or absorption spectroscopy? Explain your result. Define the difference between fluorescence and phosphorescence.

What is the probability that the the sample proportion : What is the probability that the the sample proportion

Define the doppler''s effect on spectrum linewidth : (a) Explain how the following factors affect spectrum linewidth of atomic spectroscopy shorter lifetime of excited state of the atom, decreasing temperature, increasing pressure. (b) Define the Doppler's effect on spectrum linewidth.

The two selected candies are the same flavour : What is the probability that the two selected candies are the same flavour?

Decreasing temperature rising sample concentration : Explain how the following factors affect fluorescence quantum efficiency- increasing structural rigidity, decreasing temperature, rising sample concentration.

Perform a hypothesis test to address the questions : Perform a hypothesis test to address the questions

Ethanol is frequently present in solvent grade diethyl ether : Ethanol is frequently present in solvent -grade diethyl ether. If this grade rather than anhydrous were used what effect would the ethanol have on the formation of the grignard reagent

Select five empirical articles from peer-reviewed journals : Select five empirical articles from peer-reviewed journals

Compute the mass percent and mole fraction : A solution is prepared by mixing 54.0mL toluene (C6H5CH3, d = 0.867 g/cm3) with 280mL benzene (C6H6, d = 0.874 g/cm3). Presume that the volumes add on mixing compute the mass percent, mole fraction, molality and molarity of the toluene.

User Account

All Pages