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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.
a) Write down the balanced reaction equation of the key reaction path. b) Which reactions can occur during further oxidation (except total oxidation) ? The us
Q. Explain Preservation by Preservatives? Preservatives, as you may already know, belong to a class of food additives that extend shelf life by inhibiting microbial growth, o
An electron having the quantum numbers n=1, l=3, m=0 s= -1/2 , would be in the orbital: (1) 3s (2) 3p (3) 4d
The atomic number of an element is always equal to: (1)Atomic weight divided by 2 (2)Number of neutrons in the nucleus (3)Weight of the nucleus (4)Electrical ch
why HOH is not harmful to our body but Phenol is?
The uncertainty in momentum of an electron is 1 x10 -5 kg- m/s . The uncertainty in its position will be (h= 6.62 x 10 -34 kg - m 2 / s): (1) 1.05 x 10- 28 m
Uses of methane - Alkanes (1) In the development of compounds such as formaldehyde, methyl chloride, methyl alcohol, chloroform, carbon tetrachloride, etc. (2) In the prepar
Energy difference is maximum between which of the consecutive energy levels in an atom? Ans) According to the line spectrum of hydrogen maximum energy is there between FIRST AND
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How to write chemical formula of hydrogen peroxide
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