Chapter 6, Problem 129AP

Interpretation Introduction

Interpretation:

The maximum wavelength of light that can induce the breaking of silver chloride in the lens, when exposed to light, is to be determined.

Concept introduction:

The energy of a photon can be expressed as follows:

$E=\frac{\text{hc}}{\lambda }$

Here, $E$ is the energy of the photon, $\text{h}$ is Planck’s constant $\left(6.63\times {10}^{-34}\text{ J}\cdot \text{s}\right)$, $\text{c}$ is the speed of light $\left(3.0\times {10}^8\text{ m/s}\right)$, and $\lambda$ is the wavelength.

The relationship between meters and nanometres can be expressed as $1{\text{ m =10}}^9\text{ nm}$.

To convert nanometers to meters, the conversion factor is $\frac{1\text{ nm}}{1\times {10}^{-9}\text{ m}}$.

The relationship between number of moles and number of molecules can be expressed as $1\text{mol = }6.022\times {10}^{23}$

To convert moles to number of molecules, conversion factor is $\frac{6.022\times {10}^{23}}{\text{1 mol}}$.

To convert photon and molecules, conversion factor is $\frac{1\text{ molecule}}{1\text{ photon}}$.

The relationship between kilojoules and joules can be expressed as $1\text{ kJ =1000 J}$.

To convert kilojoules to joules, the conversion factor is $\frac{1000\text{ J}}{1\text{ kJ}}$.