E = hc/wavelength.
You know E, h, and c. Calculate wavelength.
AgCl >Ag + Cl
The silver metal that is formed causes the lenses to darken. The enthalpy change for this reaction is 3.10 102 kJ/mol. Assuming all this energy must be supplied by light, what is the maximum wavelength of light that can cause this reaction?
4 answers
thats not E, its kJ/mol
E IS measured in Joules. You will need to change kJ to Joules by multiplying by 1000. And you will need to convert from a mol to a single photon by dividing by Avogadro's number;however, that is the proper equation to use. OR you could use
E = h*frequency but the question asks for wavelength and you get it with one equation if you use the first one and it takes the second equation + a third one; i.e., c = wavelength*frequency if you use the second one.
E = h*frequency but the question asks for wavelength and you get it with one equation if you use the first one and it takes the second equation + a third one; i.e., c = wavelength*frequency if you use the second one.
386nm