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Calculate the molar concentration of the solution essential to obtain the value of 10 molecules per µm2. (For this calculation we suppose that the transfer of the dye molecules from solution to the sample surface by evaporation of the solvent is homogeneous on the whole wetted area.)
The sample is illuminated with the 543.5 nm-line of a green He-Ne laser. The excitation power is adjusted so that the illuminated area (100 nm in diameter) is hit by 3 · 1010 photons per second.
priming and foaming define?
how to find atomicity of an element?
Molecular weight of orthophosphoric acid is M. Its equivalent weight is
Give detail about criteria of purity ?
how to assign r s configuration
Explain the following and give one example of each: a. Tranquillizers b. Mordant c. Hybrid rocket propellants
NaH + H2O ->
laws of chemical combination
Evaluation of food quality A common practice employed to evaluate the shelf life of a given food product is to determine changes in selected quality characteristics over a per
Nitrogen atom has an atomic number of 7 and oxygen has an atomic number 8. The total number of electrons in a nitrate ion will be: (1) 8 (2) 16 (3) 32
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