The molar extinction coefficient of cytochrome P450, one of the compounds involved in photosynthesis, at 522 nm is 291 L mol-1cm-1. When light of that wavelength passes through a cell of length 6.5 mm containing a solution of P450, 39.8 % of the light was absorbed. What is the molar concentration of the solution?

0.001165 mol/L is the molar concentration of the solution.

Explanation:

Using Beer-Lambert's law :

Formula used :

where,

A = absorbance of solution

C = concentration of solution

l = path length

T = Transmittance

= incident light

= transmitted light

= molar absorptivity coefficient

We have :

Transmittance of the light  = 100% - 39.8 % = 60.2 % = 0.602

Absorbance of the light :

Molar absorptivity coefficient  =

Length of the cell = l  6.5 mm = 0.65 cm ( 1 mm = 0.1 cm)

Now put all the given values in the above formula, we get the concentration of solution :

0.001165 mol/L is the molar concentration of the solution.

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.