Avogadro constant magnitude

The numerical value of the Avogadro constant is 6.022 x 1023, a very large number. An expression of the disparity in the size between this number and unity may be expressed in the form 6.022 x 1023 > 1 likewise, for the magnitude of the charge on the electron, we can express its smallness with respect to unity as 1.602 x 10 l9-cl. 

The Faraday constant, F, is the magnitude of the charge per mole of electrons (the product of the elementary charge e and the Avogadro constant... 

The Avogadro constant is a huge number. Its magnitude becomes easier to visualize if you imagine it in terms of ordinary items. For example, suppose that you created a stack of 6.02 x 1023 loonies, as in Figure 5.7. 

This activity presents some challenges related to the magnitude of the Avogadro constant. 

The term order of magnitude refers to the size of a number—specifically to its exponent when in scientific notation. For example, a scientist will say that 50 000 (5 x 104) is two orders of magnitude (102 times) larger than 500 (5 x 102). How many orders of magnitude is the Avogadro constant greater than one billion ... 

In this expression N. is the Avogadro constant, R is the average separation between reacting centers on electron transfer, and A/ is the effective reaction zone thickness. This latter factor has been discussed extensively in papers by Weaver and coworkers. It is immediately obvious that R is the same as the intersite jump distance S discussed previously. The reaction layer thickness AR expresses a range of nuclear separations within which the electron transfer reaction proceeds with a rate constant Aet- Majda notes that the magnitude of AR is strongly... 

The magnitude of the Avogadro constant is beyond the scale of our everyday experience. How does our everyday experience limit our intuition ... 

Coloration efficiency, defined as the magnitude of the absorbance from C at 600 nm, was also found to depend on DA (X = C H5) concentration, and saturation (i.e., nonhnear response) was noted at 25 wt% at a total dose of 1000 Gy. From a plot of coloration intensity versus DA concentration in PS films of constant thickness, an energy transfer distance, R = 14 A, from an aromatic group of PS to a molecule of DA could be calculated using a modified Perrin expression (Equation 3.36). A.,.,and Ap are absorbances extrapolated to infinite concentration and at known concentrations of DA, respectively. N is Avogadro s number and V is the reaction volume, assumed to be 4/3 n where R is the distance at which 50% of the PS transfer their excitation energy to molecules of DA... 

N is the Avogadro number, and k is a constant. The value of k may be estimated[382] from the diffusion coefficient of HaO , D - 5 x 10 cm s" and the length of the diffusion jump A - 3 x 10 cm (in order of magnitude, A is the distance between two oxygen atoms connected through a hydrogen bond, and the mechanism of anomalous mobility of the hydrogen ion is considered in this case)... 

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