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A certain molecule fluoresces at a wavelength of 400 nm with a half-life of 1.0 ns. It phosphoresces at 500 nm. If the ratio of the transition probabilities for stimulated emission for the S* --> S to the T --> S transitions is 1.0 x 10^5, what is the half-life of the phosphorescent state?
Will the boiling point of a solution of 10 g of NaCl (which has no appreciable vapor pressure at 100 oC) in 100 mL of water be higher than, lower than
identify a chemical reagent used in this experiment that can be used to distinguish cacl2 (soluble) from CaCo3 (insoluble)
read the scenarios below and respond in the form of an essay which should consist of several paragraphs and appropriate
What are the possibilities of the experimental error. Why is the zero order correlation coefficient better than first order
A new soft drink on the market is prominently labeled as "caffeine-free". Based on the nature of complaints filed by several consumers, it appears that the "caffeine-free" claim might actually be fraudulent.
What pH condition (either more soluble in acidic solution OR pH = 1 or more soluble in basic solution of pH= 13) would improve the following compounds solubility in water:
What is the ratio of the conjugate base concentration to the acid concentration, that is, [B-]/[HB] when the indicator switches to the acidic color?
An airplane is pressurized to 650 mmHg, Which is the atmospheric pressure at a ski resort at 1.30 * 10^4ft alt?
describe the hybrid orbitals used by the central atom in o3.and also determines what is the number of sigma and pi
Rank the following compounds in order of lowest to highest melting point. KCl CH3-O-CH3 CH3-CH2-CH3 CH3-CH2-NH2
Imidazole is a weak acid, and thus reacts with strong bases to form the corresponding anion. Show this reaction, and draw resonance structures that account for the stability of conjugate base.
The formula for the illegal drug cocaine is C17H21NO4. What is the percentage of hydrogen in the compound?
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